EXHIBIT NUMBER (10) (xiv)
                                                       TO 2000 FORM 10-K





                                 OFFICE LEASE


                                    BETWEEN


                METROPOLITAN LIFE INSURANCE COMPANY (LANDLORD)

                                      AND

                      THE NORTHERN TRUST COMPANY (TENANT)





                           DATED: December 29, 2000
                                           --


                                         10 South LaSalle - Northern Trust Lease
                                                                      0300031.10

                               TABLE OF CONTENTS



                                                                            Page
                                                                         
ARTICLE ONE - BASIC LEASE PROVISIONS.......................................    1
         1.01     BASIC LEASE PROVISIONS...................................    1
         1.02     ENUMERATION OF EXHIBITS..................................    2
         1.03     DEFINITIONS..............................................    3

ARTICLE TWO - PREMISES, TERM AND FAILURE TO GIVE POSSESSION................    8
         2.01     LEASE OF PREMISES........................................    8
         2.02     TERM: TERMINATION OF PRIOR LEASE.........................    8
         2.03     INTENTIONALLY OMITTED....................................    8
         2.04     AREA OF PREMISES.........................................    8
         2.05     CONDITION OF PREMISES....................................    9

ARTICLE THREE - RENT.......................................................    9

ARTICLE FOUR - RENT ADJUSTMENTS AND PAYMENTS...............................   10
         4.01     RENT ADJUSTMENTS.........................................   10
         4.02     STATEMENT OF LANDLORD....................................   11
         4.03     BOOKS AND RECORDS........................................   11
         4.04     PARTIAL OCCUPANCY........................................   12

ARTICLE FIVE - INTENTIONALLY OMITTED.......................................   13

ARTICLE SIX - SERVICES.....................................................   13
         6.01     LANDLORD'S GENERAL SERVICES..............................   13
         6.02     ELECTRICAL SERVICES......................................   14
         6.03     ADDITIONAL AND AFTER-HOUR SERVICES.......................   14
         6.04     PHONE SERVICES...........................................   15
         6.05     DELAYS IN FURNISHING SERVICES............................   15
         6.06     CHOICE OF SERVICE PROVIDER...............................   16

ARTICLE SEVEN - POSSESSION, USE AND CONDITION OF PREMISES..................   17
         7.01     POSSESSION AND USE OF PREMISES...........................   17
         7.02     LANDLORD ACCESS TO PREMISES, APPROVALS...................   19
         7.03     QUIET ENJOYMENT..........................................   20

ARTICLE EIGHT - MAINTENANCE................................................   20
         8.01     LANDLORD'S MAINTENANCE...................................   20
         8.02     TENANT'S MAINTENANCE.....................................   20



                                       i



                                                                          
ARTICLE NINE - ALTERATIONS AND IMPROVEMENTS.................................  21
         9.01     TENANT'S ALTERATIONS......................................  21
         9.02     LIENS.....................................................  22

ARTICLE TEN - ASSIGNMENT AND SUBLETTING.....................................  23
         10.01    ASSIGNMENT AND SUBLETTING.................................  23
         10.02    RECAPTURE.................................................  25
         10.03    EXCESS RENT...............................................  25
         10.04    TENANT LIABILITY..........................................  26
         10.05    ASSUMPTION AND ATTORNMENT.................................  26

ARTICLE ELEVEN - DEFAULT AND REMEDIES.......................................  26
         11.01    EVENTS OF DEFAULT.........................................  26
         11.02    LANDLORD'S REMEDIES.......................................  27
         11.03    ATTORNEY'S FEES...........................................  28
         11.04    BANKRUPTCY................................................  29
         11.05    LANDLORD'S DEFAULT........................................  30

ARTICLE TWELVE - SURRENDER OF PREMISES......................................  30
         12.01    IN GENERAL................................................  30
         12.02    LANDLORD'S RIGHTS.........................................  31

ARTICLE THIRTEEN - HOLDING OVER.............................................  31

ARTICLE FOURTEEN - DAMAGE BY FIRE OR OTHER CASUALTY.........................  31
         14.01    SUBSTANTIAL UNTENANTABILITY...............................  31
         14.02    INSUBSTANTIAL UNTENANTABILITY.............................  32
         14.03    RENT ABATEMENT............................................  33

ARTICLE FIFTEEN - EMINENT DOMAIN............................................  33
         15.01    TAKING OF WHOLE OR SUBSTANTIAL PART.......................  33
         15.02    TAKING OF PART............................................  33
         15.03    COMPENSATION..............................................  34

ARTICLE SIXTEEN - INSURANCE.................................................  34
         16.01    TENANT'S INSURANCE........................................  34
         16.02    FORM OF POLICIES..........................................  35
         16.03    LANDLORD'S INSURANCE......................................  35
         16.04    WAIVER OF SUBROGATION.....................................  35
         16.05    NOTICE OF CASUALTY........................................  37
         16.06    SELF INSURANCE............................................  37


                                      ii





                                                                          
ARTICLE SEVENTEEN - INTENTIONALLY OMITTED...................................  37

ARTICLE EIGHTEEN - RULES AND REGULATIONS....................................  38
         18.01    RULES.....................................................  38
         18.02    ENFORCEMENT...............................................  38

ARTICLE NINETEEN - LANDLORD'S RESERVED RIGHTS...............................  38

ARTICLE TWENTY - ESTOPPEL CERTIFICATE.......................................  39
         20.01    IN GENERAL................................................  39
         20.02    ENFORCEMENT...............................................  39

ARTICLE TWENTY-ONE - INTENTIONALLY OMITTED..................................  39

ARTICLE TWENTY-TWO - REAL ESTATE BROKERS....................................  40

ARTICLE TWENTY-THREE - MORTGAGEE PROTECTION.................................  40
         23.01    SUBORDINATION AND ATTORNMENT..............................  40
         23.02    MORTGAGEE PROTECTION......................................  41

ARTICLE TWENTY-FOUR - NOTICES...............................................  41

ARTICLE TWENTY-FIVE - RENEWAL OPTIONS.......................................  42

ARTICLE TWENTY-SIX - ARBITRATION............................................  46

ARTICLE TWENTY-SEVEN - EXPANSION OPTIONS....................................  47

ARTICLE TWENTY-EIGHT - RIGHT OF FIRST OFFER.................................  52

ARTICLE TWENTY-NINE - SUBORDINATE EXPANSION OPTION..........................  54

ARTICLE THIRTY - CONTRACTION OPTION.........................................  56

ARTICLE THIRTY-ONE - TERMINATION OPTION.....................................  58

ARTICLE THIRTY-TWO - SIGNAGE................................................  58

ARTICLE THIRTY-THREE - PERSONNEL BRIDGE.....................................  59


                                      iii



                                                                          
ARTICLE THIRTY-FOUR - MISCELLANEOUS........................................   60
         34.01    LATE CHARGES.............................................   60
         34.02    WAIVER OF JURY TRIAL.....................................   60
         34.03    OPTION...................................................   60
         34.04    TENANT AUTHORITY.........................................   60
         34.05    ENTIRE AGREEMENT.........................................   60
         34.06    MODIFICATION OF LEASE FOR BENEFIT OF MORTGAGEE...........   60
         34.07    SATELLITE SYSTEM.........................................   61
         34.08    EXCULPATION..............................................   61
         34.09    ACCORD AND SATISFACTION..................................   61
         34.10    LANDLORD'S OBLIGATIONS ON SALE OF BUILDING...............   61
         34.11    BINDING EFFECT...........................................   61
         34.12    CAPTIONS.................................................   61
         34.13    APPLICABLE LAW...........................................   62
         34.14    ABANDONMENT..............................................   62
         34.15    LANDLORD'S RIGHT TO PERFORM TENANT'S DUTIES..............   62
         34.16    GENERATOR................................................   62
         34.17    RIDERS...................................................   63


                                      iv


                                 OFFICE LEASE

                                  ARTICLE ONE
                            BASIC LEASE PROVISIONS

1.01 BASIC LEASE PROVISIONS

In the event of any conflict between these Basic Lease Provisions and any other
Lease provision, such other Lease provision shall control.

(1)  Building and Address:

     CHASE PLAZA
     10 South LaSalle Street
     Chicago, Illinois 60603

(2)  Landlord and Address:

     METROPOLITAN LIFE INSURANCE COMPANY
     c/o CB Richard Ellis, Inc.
     10 South LaSalle Street, Suite 1301
     Chicago, Illinois 60603

(3)  Tenant and Current Address:

     THE NORTHERN TRUST COMPANY
     10 South LaSalle, Suite 400
     Chicago, Illinois 60603

(4)  Date of Lease: December 29, 2000

(5)  Lease Term: fifteen (15) years

(6)  Commencement Date: January 1, 2001

(7)  Expiration Date: December 31, 2015

(8)  Base Rent:

     Period                  Monthly      Annually
     ------                  -------      --------

     01/01/01 to 12/21/01    $263,465.46  $3,161,585.53
     01/01/02 to 12/31/02    $211,288.76  $2,535,465.08
     01/01/03 to 12/31/03    $217,743.61  $2,612,923.28
     01/01/04 to 12/31/04    $245,284.30  $2,943,411.60
     01/01/05 to 12/31/05    $251,739.15  $3,020,869.80



     Period                  Monthly      Annually
     ------                  -------      --------

     01/01/06 to 12/31/06    $258,194.00  $3,098,328.00
     01/01/07 to 12/31/07    $264,648.85  $3,175,786.20
     01/01/08 to 12/31/08    $271,103.70  $3,253.244.40
     01/01/09 to 12/31/09    $277,558.55  $3,330,702.60
     01/01/10 to 12/31/10    $284,013.40  $3,408,160.80
     01/01/11 to 12/31/11    $290,468.25  $3,485,619.00
     01/01/12 to 12/31/12    $296,923.10  $3,563,077.20
     01/01/13 to 12/31/13    $303,377.95  $3,640,535.40
     01/01/14 to 12/31/14    $309,832.80  $3,717,993.60
     01/01/15 to 12/31/15    $316,287.65  $3,795,451.80

(9)  Rentable Area of the office portion of the Building: 715,785 square feet

(10) Rentable Area of the Initial Premises:  129,097 rentable square feet,
     consisting of:

     Floor(s)       Rentable Square Feet
     --------       --------------------

         4                20,006
         5                19,549
         6                20,040
         7                20,040
         8                20,722
         9                10,291
         10               10,104
         13                8,345

(11) Security Deposit: Not applicable

(12) Suite Number of the Premises: 400

(13) Tenant's Share: 18.0357%

(14) Tenant's Use of the Premises: General office use consistent with general
     office use in other first-class office buildings in downtown Chicago,
     Illinois.

1.02 ENUMERATION OF EXHIBITS

The exhibits set forth below and attached to this Lease are incorporated in this
Lease by this reference:

SCHEDULE ONE:  Controllable Operating Expenses
EXHIBIT A:     Plan of Premises
EXHIBIT B:     Workletter Agreement
EXHIBIT C:     Rules and Regulations

                                       2


EXHIBIT D:     Cleaning Specifications
EXHIBIT E:     Heating, Ventilating and Air-Conditioning
EXHIBIT F:     Base Building Conditions
EXHIBIT G:     Major Categories for Operating Expenses
EXHIBIT H:     Categories for Removal
EXHIBIT I:     Satellite License

1.03 DEFINITIONS
For purposes hereof, the following terms shall have the following meanings:

(1)  Affiliate: Any corporation or other business entity which (i) is currently
     ---------
     owned or controlled by, owns or controls, or is under common ownership or
     control with Tenant, or (ii) is Tenant's successor through merger,
     reorganization or consolidation or (iii) acquires substantially all of the
     assets or the capital stock of Tenant.

(2)  Adjustment Year:  The calendar year or any portion thereof after the
     ---------------
     Commencement Date of this Lease for which a Rent Adjustment computation is
     being made.

(3)  Bridge:  The walkway connecting the Building with the building located at
     ------
     50 South LaSalle Street, Chicago, Illinois (the "Tenant Building") at the
     sixth floor level, for use by persons going to and from the Tenant Building
     and to and from the Premises.

(4)  Building:  The office building located at 10 South LaSalle Street, Chicago,
     --------
     Illinois  60603.

(5)  Commencement Date:  The date specified in Section 1.01(6) as the
     -----------------
     Commencement Date, unless changed by operation of Article Two.

(6)  Common Areas:  All areas of the Real Property made available by Landlord
     ------------
     from time to time for the general common use or benefit of the tenants of
     the Building, and their employees and invitees, or the public, as such
     areas currently exist and as they may be changed from time to time;
     provided, however, that Landlord shall not make any changes in the Common
     Area that would materially impair, restrict or diminish Tenant's access to
     the Premises.

(7)  Decoration:  Tenant Alterations which do not require a building permit and
     ----------
     which do not involve any of the structural elements of the Building, or any
     of the Building's systems, including, without limitation, its electrical,
     mechanical, plumbing and security and life/safety systems.

(8)  Default Rate:  Two percent (2%) above the rate then most recently announced
     ------------
     by Bank One as its corporate base lending rate, from time to time
     announced, but in no event higher than the maximum rate permitted by law.

(9)  Environmental Laws:  Any Law governing the use, storage, disposal or
     ------------------
     generation of any Hazardous Material, including without limitation, the
     Comprehensive Environmental

                                       3


Response Compensation and Liability Act of 1980, as amended and the Resource
Conservation and Recovery Act of 1976, as amended.

(10) Expiration Date:  The date specified in Section 1.01(7).
     ---------------

(11) Force Majeure:  Any accident, casualty, act of God, war or civil commotion,
     -------------
     strike or labor troubles, or any cause whatsoever beyond the reasonable
     control of Landlord or Tenant, including, but not limited to, energy
     shortages or governmental preemption in connection with a national
     emergency, or by reason of government laws or any rule, order or regulation
     of any department or subdivision thereof or any governmental agency, or by
     reason of the conditions of supply and demand which have been or are
     affected by war or other emergency.

(12) Hazardous Material:  Such substances, material and wastes which are or
     ------------------
     become regulated under any Environmental Law; or which are classified as
     hazardous or toxic under any Environmental Law; and explosives and
     firearms, radioactive material, asbestos, and polychlorinated byphenyls.

(13) Indemnitees:  Collectively, Landlord, any Mortgagee or ground lessor of the
     -----------
     Property, the property manager and the leasing manager for the Property and
     their respective directors, officers, agents and employees.

(14) Initial Premises:  The space located in the Building described in Section
     ----------------
     1.01(10) and depicted on Exhibit A attached hereto.
                              ---------

(15) Land:  The parcels of real estate on which the Building is located.
     ----

(16) Laws:  All laws, ordinances, rules, regulations and other requirements
     ----
     adopted by any governmental body, or agency or department having
     jurisdiction over the Property, the Premises or Tenant's activities at the
     Premises and any covenants, conditions or restrictions of record which
     affect the Property.

(17) Lease:  This instrument and all exhibits and riders attached hereto, as may
     -----
     be amended from time to time.

(18) Lease Year:  The twelve month period beginning on the first day of the
     ----------
     first month following the Commencement Date (unless the Commencement Date
     is the first day of a calendar month in which case it is the 12 month
     period beginning on the Commencement Date), and each subsequent twelve
     month, or shorter, period until the Expiration Date.

(19) Monthly Base Rent:  The monthly rent specified in Section 1.01(8).
     -----------------

(20) Mortgagee:  Any holder of a mortgage, deed of trust or other security
     ---------
     instrument encumbering the Property.

                                       4


(21) National Holidays:  Those federal or state holidays or such other days on
     -----------------
     which banks in the State of Illinois are required to be closed for
     business.

(22) Operating Expenses: All costs, expenses and disbursements of every kind and
     ------------------
     nature which Landlord shall pay or become obligated to pay in connection
     with the ownership, management, operation, maintenance, replacement and
     repair of the Property (including, without limitation, the amortized
     portion of any capital expenditure or improvement, together with interest
     thereon, and the costs of changing utility service providers). Operating
     Expenses shall not include, (i) painting, redecorating or other work which
     Landlord performs in tenant spaces for any other tenant of the Building
     other than painting, redecorating or other work which is standard for the
     Building and performed for tenants subsequent to their initial occupancy;
     (ii) costs of capital improvements to the Building (except for amortized
     portion of capital improvements installed for the purpose of reducing or
     controlling Operating Expenses or complying with applicable Laws); (iii)
     depreciation; (iv) interest and principal payments on loans (except for
     loans for capital improvements which Landlord is allowed to include in
     Operating Expenses as provided above); (v) ground rental payments; (vi)
     real estate brokerage and leasing commissions and expenses of procuring
     tenants, including lease concessions and lease take-over obligations; (vii)
     advertising and marketing expenses; (viii) costs of Landlord reimbursed by
     insurance proceeds, condemnation proceeds or in another manner; (ix)
     expenses incurred in negotiating leases of other tenants in the Building or
     enforcing lease obligations of other tenants in the Building; (x)
     Landlord's or Landlord's property manager's corporate general overhead or
     corporate general administrative expenses; (xi) any management or similar
     fee in excess of the greater of (a) 3.0% of the total gross revenues of the
     Property, or (b) the fees then customarily charged for building management
     for buildings of like class and character in the area; (xii) any costs or
     other sums paid to any person or entity related to or affiliated with
     Landlord to the extent that same exceeds the reasonable and customary cost
     thereof; (xiii) professional fees incurred in connection with the
     preparation of financial statements, tax returns and other documents and
     information for Landlord or its mortgagees, except for audits of operating
     expenses; (xiv) costs of paintings, sculptures or other art work; (xv) bad
     debt or rent loss reserves; (xvi) charitable contributions; (xvii) overtime
     utility charges for utilities benefiting other tenants; (xviii) costs of
     curing defects in construction; (ixx) costs relating to retail stores or to
     other specialty services such as health clubs, broadcasting facilities or
     cafeterias (xx) any compensation paid to clerks, attendants or other
     persons in commercial concessions operated by Landlord; (xxi) costs
     incurred in connection with upgrading the Building (but not the Premises as
     set forth in Section 7.01(c) hereof) to comply with the current
     interpretation of disability, life, fire and safety codes, ordinances,
     statues or Laws in effect prior to the Commencement Date (including,
     without limitation, ADA), including penalties or damages incurred due to
     such non-compliance; and (xxii) legal and other professional fees and
     expenses incurred in resolving any disputes with tenants and other
     occupants or enforcing lease obligations, including, without limitation,
     court costs. If any Operating Expense, though paid in one year, relates to
     more than one calendar year, at option of Landlord such expense may be
     proportionately allocated among such related calendar years.

                                       5


(23) Owner's Representative: The individual who is an employee of Landlord and
     ----------------------
     is charged with the day-to-day responsibility for the Building and the
     management and operation thereof and is the designated person to whom all
     notices for the Building are to be forwarded, as well as the individual who
     is charged with acting as liaison between Landlord and the Building manager
     in connection with the Building.  The initial Owner's Representative shall
     be Katherine B. McCarthy.  If at any time and from time to time Landlord
     designates a successor to Katherine B. McCarthy, Landlord shall communicate
     the name of such successor to Tenant in writing by a notice to be delivered
     by Landlord to Tenant. In the event Landlord fails to communicate the name
     of the successor to Tenant, it shall not be deemed a default hereunder.
     Notwithstanding the above, upon Tenant's written request, Landlord shall
     communicate the name of such successor within three (3) business days or as
     soon as possible in the case of an emergency.

     In the event Landlord sells the Building to an entity unrelated to
     Metropolitan Life Insurance Company, a New York corporation, then Owner's
     Representative shall mean Landlord.

(24) Premises: The Initial Premises and any office space located in the
     --------
     Building which may be added to or subtracted from the Initial Premises in
     accordance with the terms and provisions of this Lease.

(25) Prior Lease:  That certain Office Lease dated July 8, 1987, as amended by
     -----------
     that certain First Amendment to Office Lease dated October 20, 1987; and by
     that certain Second Amendment to Office Lease dated January 16, 1998; and
     as further amended by that certain Third Amendment to Office Lease dated
     May 27, 1998 (collectively, the "Lease") for the lease of certain office
     space, currently consisting of the 4/th/ through 8/th/ floors and portions
     of the 9/th/, 10/th/ and 13/th/ floors in the Building.

(26) Property:  The Building, the Land, any other improvements located on the
     --------
     Land, including, without limitation, any parking structures and the
     personal property, fixtures, machinery, equipment, systems and apparatus
     located in or used in conjunction with any of the foregoing.

(27) Real Property:  The Property excluding any personal property.
     -------------

(28) Rent:  Collectively, Monthly Base Rent, Storage Space Rent, Rent
     ----
     Adjustments and Rent Adjustment Deposits, and all other charges, payments,
     late fees or other amounts required to be paid by Tenant under this Lease.

(29) Rentable Area of the Building:  The amount of square footage set forth in
     -----------------------------
     1.01(9).

(30) Rentable Area of the Initial Premises:  The amount of square footage set
     -------------------------------------
     forth in 1.01(10).

(31) Rent Adjustment:  Any amounts owed by Tenant for payment of Operating
     ---------------
     Expenses or Taxes. The Rent Adjustments shall be determined and paid as
     provided in Article Four.

                                       6


(32) Rent Adjustment Deposit:  An amount equal to the Rent Adjustments
     -----------------------
     attributable to each month within the latest Adjustment Year for which the
     Rent Adjustment has been determined.  Landlord shall estimate the Rent
     Adjustment Deposit for the remainder of the first calendar year of this
     Lease based on the Taxes and Operating Expenses of the Property.

(33) Substantially Complete:  The completion of repair and/or restoration work
     ----------------------
     pursuant to Article Fourteen of this Lease or otherwise, except for minor
     insubstantial details of construction, decoration or mechanical adjustments
     which remain to be done and which do not interfere with Tenant's use of the
     Initial Premises for Tenant's business purpose and the completion of all
     work required by Landlord pursuant to the terms of this Lease, including
     those set forth on Exhibit F hereto with respect to the Premises.

(34) Taxes:  All federal, state and local governmental taxes, assessments and
     -----
     charges of every kind or nature, whether general, special, ordinary or
     extraordinary, which Landlord shall pay or become obligated to pay because
     of or in connection with the ownership, leasing, management, control or
     operation of the Property or any of its components, or any personal
     property used in connection therewith, which shall also include any rental
     or similar taxes levied in lieu of or in addition to general real and/or
     personal property taxes. For purposes hereof, Taxes for any year shall be
     Taxes which are assessed or become a lien during such year, whether or not
     such taxes are billed and payable in a subsequent calendar year. There
     shall be included in Taxes for any year the amount of all fees, costs and
     expenses (including reasonable attorneys' fees) paid by Landlord during
     such year in seeking or obtaining any refund or reduction of Taxes. Taxes
     for any year shall be reduced by the net amount of any tax refund received
     by Landlord attributable to such year. If a special assessment payable in
     installments is levied against any part of the Property, Taxes for any year
     shall include only the installment of such assessment and any interest
     payable or paid during such year. Taxes shall not include any federal,
     state or local government inheritance, general income, gift or estate
     taxes, except that if a change occurs in the method of taxation resulting
     in whole or in part in the substitution of any such taxes or franchise or
     capital stock taxes, or any other assessment, for any Taxes as above
     defined, such substituted taxes or assessments shall be included in the
     Taxes.

(35) Tenant Additions:  Collectively, Tenant Work and Tenant Alterations.
     ----------------

(36) Tenant Alterations:  Any alterations, improvements, additions,
     ------------------
     installations or construction in or to the Premises or any Building systems
     serving the Premises; and any supplementary air-conditioning systems
     installed by Landlord or by Tenant at Landlord's request pursuant to
     Section 6.01(b).

(37) Tenant Work:  The work specified in Section 2.05.
     -----------

(38) Tenant's Share:  The percentage specified in Section 1.01(13) which
     --------------
     represents the ratio of the Rentable Area of the Premises to the Rentable
     Area of the Building.

                                       7


(39) Term:  The term of this Lease commencing on the Commencement Date and
     ----
     expiring on the Expiration Date.

(40) Termination Date:  The Expiration Date or such earlier date as this Lease
     ----------------
     terminates or Tenant's right to possession of the Premises terminates.

(41) Workletter:  The terms and provisions regarding the manner of completion of
     ----------
     Tenant Work attached as Exhibit B attached hereto.
                             ---------

                                  ARTICLE TWO
                 PREMISES, TERM AND FAILURE TO GIVE POSSESSION

2.01 LEASE OF PREMISES

Landlord hereby leases to Tenant and Tenant hereby leases from Landlord the
Premises for the Term and upon the terms, covenants and conditions provided in
this Lease.  In the event Landlord delivers possession of the Premises to Tenant
prior to the Commencement Date, Tenant shall be subject to all of the terms,
covenants and conditions of this Lease (except with respect to the payment of
Rent) as of the date of such possession.

2.02 TERM: TERMINATION OF PRIOR LEASE

The Commencement Date shall be January 1, 2001 and Tenant is currently in
possession of the Initial Premises in accordance with the terms of the Prior
Lease.

     Commencing on the Commencement Date, the term of the Prior Lease shall
terminate and expire (the "Effective Date") as if such date were the stated
expiration date of the term of the Prior Lease; provided, however, Tenant and
Landlord shall not be released from any liability under the Prior Lease accruing
before the Effective Date.  Landlord and Tenant shall each fully comply with all
of their respective obligations under the Prior Lease through the Effective Date

2.03 INTENTIONALLY OMITTED

2.04 AREA OF PREMISES

Landlord and Tenant agree that for all purposes of this Lease the Rentable Area
of the Initial Premises and the Rentable Area of the Building as set forth in
Article One have been measured according to the 1990 BOMA standard and are
controlling, and are not subject to revision after the date of this Lease.  Any
space leased prior to December 31, 2001 in accordance with the provisions of
this Lease will use the same 1990 BOMA standard.  For any space leased on or
after January 1, 2002 pursuant to any provision or option contained in this
Lease, Landlord will measure such space consistent with the BOMA standard being
utilized within the Building at the time such space is added to the Premises.

                                       8


2.05 CONDITION OF PREMISES

The Initial Premises are currently occupied by Tenant and have been accepted in
their AS IS condition and Landlord has no obligation to make any improvement to
the Initial Premises, provided however, that Landlord shall contribute an amount
(the "Contribution") equal to One Million Nine Hundred Thirty-Six Thousand Four
Hundred Fifty-Five and No/100 Dollars ($1,936,455.00)(based on $15.00 per
rentable square foot) to be applied to Tenant's completion of such improvements
and additions to the Initial Premises as Tenant deems desirable including all
construction improvements, architectural and engineering fees, third party
construction consultants, FF&E expenses, or teledata related costs (the "Tenant
Work").  The Contribution shall be distributed in accordance with the terms and
conditions set forth in Exhibit B or applied as a Rent Credit as hereinafter
                        ---------
provided.  Tenant shall complete the Work in accordance with the terms of this
Lease, including, without limitation, Exhibit B.  The Contribution shall be
                                      ---------
available for Tenant's use anytime from the date this Lease is fully executed by
both parties through June 30, 2002.  If the costs of completing the Tenant Work
exceeds the sum of  the Contribution, Tenant shall pay all such costs. All
requests for disbursements from the Contribution must be received no later than
October 31, 2001.  Any unused portion of the Contribution which is not disbursed
by December 31, 2001, as provided above, shall be applied against the next
installments of Rent due from Tenant (the "Rent Credit"). In the event that
Tenant fails to use all of the Contribution as set forth above, or apply it as
Rent Credit, on or before December 31, 2002, Landlord shall have no further
obligation to either disburse such remaining funds or to apply such remaining
funds as Rent Credit and any unused Contribution shall be retained by Landlord
for its own use.

     No agreement of Landlord to alter, remodel, decorate, clean or improve the
Initial Premises, the Premises or the Real Property and no representation
regarding the condition of the Initial Premises or the Premises or the Real
Property has been made by or on behalf of Landlord to Tenant, except as may be
specifically stated in this Lease (including, without limitation, Articles
Twenty-Seven and Twenty-Eight) or in the Workletter.

                                 ARTICLE THREE
                                     RENT

Tenant agrees to pay to Landlord at the office specified in Section 1.01(2), or
to such other persons, or at such other places designated by Landlord, without
any prior demand therefor in immediately available funds and without any
deduction or offset whatsoever (except as specifically provided for in this
Lease), Rent, including, without limitation, Monthly Base Rent and Rent
Adjustments in accordance with Article Four, during the Term. Monthly Base Rent
shall be paid monthly in advance on the first day of each month of the Term,
except that the first installment of Monthly Base Rent shall be paid by Tenant
to Landlord on the Commencement Date.  Monthly Base Rent shall be prorated for
partial months within the Term. Rent which remains unpaid five (5) days after
the due date shall bear interest at the Default Rate. Tenant's covenant to pay
Rent shall be independent of every other covenant in this Lease.

                                       9


                                 ARTICLE FOUR
                         RENT ADJUSTMENTS AND PAYMENTS

4.01 RENT ADJUSTMENTS

     (a)  Tenant shall pay to Landlord Rent Adjustments during the Term as
follows:

          (i)  The Rent Adjustment Deposit representing Tenant's Share of
     Operating Expenses and Taxes attributable to any calendar year (or portion
     thereof) monthly during the Term with the payment of Monthly Base Rent
     except the first installment which shall be paid by Tenant to Landlord on
     the Commencement Date; and

          (ii) Any Rent Adjustments due in excess of the Rent Adjustment
     Deposits in accordance with Section 4.02.

     (b) Notwithstanding anything to the contrary contained herein, for the
initial five (5) years (January 1, 2001 through December 31, 2005) of this
Lease, solely for purposes of calculating Rent Adjustments, Controllable
Operating Expenses (as defined below) for the period from the Commencement Date
through December 31, 2005 shall not exceed a 6% cumulative, compounded annual
rate of the total actual Controllable Operating Expenses for the Building (the
"Cap Amount") for the entire calendar year 2000 ("Base Year").

     For purposes of this subparagraph (b), "Controllable Operating Expenses"
shall mean only those items of Operating Expenses where the cost or expense
thereof shall be within the reasonable ability of Landlord to control on a per
annum basis, from time to time, and shall not include the following items (i)
insurance, (ii) collectively bargained union wages, and (iii) electricity and
other utilities, as well as any other items where the cost or expense thereof is
beyond the reasonable ability of Landlord to control. Such limitation on
Controllable Operating Expenses shall apply only to Controllable Operating
Expenses and not to other items of Operating Expenses and shall not limit or
otherwise affect Tenant's obligations regarding the payment of any component of
Rent other than the Controllable Operating Expenses component of Rent
Adjustment.

     Notwithstanding any of the foregoing provisions of this subparagraph (b),
the 6% cap, cumulative, compounded annual rate for the initial five (5) years
means that if the Controllable Operating Expenses in the first year are less
than 6%, but they exceed such amount in the second year, Landlord can recapture
the amount up to the applicable Cap Amount ("Excess Costs") and in the further
event in any prior or subsequent calendar years the Controllable Operating
Expenses were less than the applicable Cap Amount ("Excess Savings"), Landlord
shall have the right to charge Tenant, in addition to the Rent Adjustment
otherwise due Landlord for the applicable calendar year, the Excess Costs up to
the amount of the Excess Savings.  Several samples of how this might work are
set forth in Schedule One attached hereto and made a part hereof.

     The limitation on Controllable Operating Expenses set forth in this
subparagraph (b) shall not be applicable during any time period other than as
set forth above.

                                       10


4.02 STATEMENT OF LANDLORD

As soon as feasible (as determined by Landlord) after the expiration of each
calendar year of this Lease, Landlord will furnish Tenant a statement
("Landlord's Statement") prepared according to generally accepted accounting
principles consistently applied, and certified by Landlord's then regularly
employed independent certified public accountant (the "CPA") to have been
prepared in conformity with the terms and provisions of this Lease, and
containing a schedule substantially similar to that shown as Exhibit G.
                                                             ---------
Landlord's Statement shall also show the following:

          (i)   Operating Expenses and Taxes for the Adjustment Year;

          (ii)  The amount of Rent Adjustments due Landlord for the Adjustment
     Year, less credit for Rent Adjustment Deposits paid, if any; and

          (iii) The Rent Adjustment Deposit due monthly in the calendar year
     next following the Adjustment Year including the amount or revised amount
     due for months prior to the rendition of the statement.

Tenant shall pay to Landlord within thirty (30) days after receipt of such
statement any amounts for Rent Adjustments then due in accordance with
Landlord's Statement. Any amounts due from Landlord to Tenant pursuant to this
Section shall be credited to the Rent Adjustment Deposits next coming due, or
refunded to Tenant within thirty (30) days if the Term has already expired
provided Tenant is not then in Default. No interest or penalties shall accrue on
any amounts which Landlord is obligated to credit or refund to Tenant by reason
of this Section 4.02. Landlord's failure to deliver Landlord's Statement or in
computing the amount of the Rent Adjustments shall not constitute a waiver by
Landlord of its right to deliver such items nor constitute a release of Tenant's
obligations to pay such amounts. The Rent Adjustment Deposit shall be credited
against Rent Adjustments due for the applicable Adjustment Year. During the last
complete calendar year or during any partial calendar year in which the Lease
terminates, Landlord may include in the Rent Adjustment Deposit its estimate of
Rent Adjustments which may not be finally determined until after the termination
of this Lease. Tenant's obligation to pay Rent Adjustments survives the
expiration or termination of the Lease. Landlord's obligation to refund any
amounts due from Landlord to Tenant hereunder shall survive expiration or
termination of this Lease. Notwithstanding the foregoing, in no event shall the
sum of Monthly Base Rent and the Rent Adjustments be less than the Monthly Base
Rent payable.

4.03 BOOKS AND RECORDS

     (a)  Landlord shall maintain books and records showing Operating Expenses
and Taxes in accordance with sound accounting and management practices,
consistently applied. Tenant or its representative (which representative shall
be a certified public accountant licensed to do business in the state in which
the Property is located) shall have the right, for a period of ninety (90) days
following the date upon which Landlord's Statement is delivered to Tenant, to
examine the Landlord's books and records with respect to the items in the
foregoing statement of Operating Expenses and Taxes during normal business
hours, upon written notice, delivered at least three (3)

                                       11


business days in advance. If Tenant does not object in writing to Landlord's
Statement within one hundred fifty (150) days of Tenant's receipt thereof,
specifying the nature of the item in dispute and the reasons therefor, then
Landlord's Statement shall be considered final and accepted by Tenant. Any
dispute raised by Tenant shall be submitted to and resolved by CPA. Any amount
due to the Landlord as shown on Landlord's Statement, whether or not disputed by
Tenant as provided herein shall be paid by Tenant when due as provided above,
without prejudice to any such written exception.

     (b)  In the event such audit discloses (i) errors made during the prior
calendar year which, when totaled, established that the sum overcharged to and
paid by Tenant exceeds four percent (4%) of the actual (as distinguished from
estimated) amount of Tenant's Share of Operating Expenses and Taxes, Tenant's
reasonable costs of the audit shall be paid by Landlord, or (ii) no errors or an
error which equals or is less than four percent (4%), Tenant's costs of the
audit shall be paid by Tenant. If the audit determines that any sums are due and
owing Tenant, such sums shall be credited to the Rent Adjustment Deposits next
coming due or refunded to Tenant within thirty (30) days if this Lease has been
terminated.

     (c)  Tenant acknowledges and agrees that it is a condition of Tenant's
right to conduct an audit pursuant to the foregoing, that Tenant and/or its
representative, prior to commencement of such audit, execute a confidentiality
agreement whereby Tenant and/or its representative agree to keep confidential
and not disclose to any other party ( other than Tenant's employees involved in
such audit, and other professionals directly involved in the audit or results
thereof) the results of any such audit or any action taken by Landlord in
response thereto, except if required to disclose such information as required by
applicable law or court order.

     (d)  In the event Landlord sells the Building to an entity unrelated to
Metropolitan Life Insurance Company, a New York corporation, then Section
4.03(d) hereof shall be replaced with the following:

          "The fees of the CPA with respect to such dispute shall be paid by
          Tenant, unless the total amount of the Operating Expense and Tax
          Adjustment as provided in Landlord's Statement exceeds the total
          amount of the finally determined Operating Expense and Tax Adjustment
          (the "Audited Differential") by more than $25,000 and less than 4%, in
          which event, Landlord will reimburse Tenant for its actual costs not
          to exceed $5,000. In the event the Audited Differential is over 4% the
          finally determined Operating Expense and Tax Adjustment, Landlord will
          reimburse Tenant for its actual costs."

4.04 PARTIAL OCCUPANCY

For purposes of determining Rent Adjustments for any Adjustment Year if the
Building is not fully rented during all or a portion of any year, Landlord may
make appropriate adjustments to the Operating Expenses for such Adjustment Year
employing sound accounting and management principles consistently applied, to
determine the amount of Operating Expenses that would have been paid or incurred
by Landlord had the Building been 95% occupied, and the amount so determined
shall be deemed to have been the amount of Operating Expenses for such
Adjustment

                                       12


Year. In the event that the Real Property is not fully assessed for any year,
then Taxes shall be adjusted to an amount which would have been payable in such
year if the Real Property had been fully assessed. In the event any other tenant
in the building provides itself with a service which Landlord would supply under
the Lease without an additional or separate charge to Tenant, then Operating
Expenses shall be deemed to include the cost Landlord would have incurred had
Landlord provided such service to such other tenant. In no event shall Landlord
be entitled to collect more than 100% of the Operating Expenses and/or Taxes (as
the case may be) for any Adjustment Year.

                                 ARTICLE FIVE
                             INTENTIONALLY OMITTED

                                  ARTICLE SIX
                                   SERVICES

6.01 LANDLORD'S GENERAL SERVICES

     (a)  So long as the Lease is in full force and effect, Landlord shall
furnish the following services:

          (i)   heat and air-conditioning in the Premises, Monday through Friday
     from 8:00 A.M. to 6:00 P.M., Saturday, from 8:00 A.M. to 1:00 P.M.,
     excluding National Holidays, as necessary in Landlord's reasonable judgment
     for the comfortable occupancy of the Premises under normal business
     operations, subject to compliance with all applicable voluntary and
     mandatory regulations and laws.  The current   parameters for the HVAC
     system are set forth on Exhibit E attached hereto and are subject to change
                             ---------
     as required by Law;

          (ii)  cold water for use in drinking fountains and tempered and cold
     water for use in lavatories in common with other tenants from the regular
     supply of the Building;

          (iii) customary cleaning and janitorial services in the Premises
     Monday through Friday, excluding National Holidays, in accordance with the
     Cleaning Specifications attached hereto as Exhibit D;
                                                ---------

          (iv)  washing of the outside windows in the Premises weather
     permitting and washing of the inside windows, both at intervals determined
     by Landlord but in no event less than three (3) times per year for each;

          (v)   automatic passenger elevator service in common with other
     tenants of the Building and freight elevator service subject to reasonable
     scheduling by Landlord and payment of Landlord's standard charges;

          (vi)  security services consistent with Class A Properties in downtown
     Chicago, including, but not limited to 24 hour manned security in the lobby
     or such other security services as may be used by such Properties;

                                       13


          (vii) use of dock berths with access from LaSalle and/or Wells
     Streets for deliveries during normal business hours;

     (b)  Wherever heat generating machines or equipment are used in the
Premises which affect temperature otherwise maintained by the air-conditioning
system, Landlord reserves the right to require Tenant to provide, install,
operate and maintain supplementary air-conditioning units in the Premises at
Tenant's sole cost and expense.

     (c)  Tenant shall pay Landlord at rates fixed by Landlord for all tenants
in the Building, charges for all water furnished to the Premises for other
purposes, including the expenses of installation of a water line, meter and
fixtures.

     (d)  If requested by Tenant and subject to available capacity, Landlord
agrees to provide condenser water to the Premises throughout the year.  The cost
of the condenser water and any metering and hookup costs shall be at Tenant's
expense and shall be at rates then fixed by Landlord for all tenants in the
Building.

6.02 ELECTRICAL SERVICES

     (a)  Landlord will provide electricity for the Premises for the Tenant's
lighting and general office use of 5.6 watts per usable square foot or 4.8 watts
per rentable square foot. The Building shall be serviced by a minimum of two (2)
separate electrical power feeds each served by a separate substation and with an
automatic throw-over switch. The Tenant's Premises will be separately metered
and the Tenant shall directly pay the public utility for all electricity use
pursuant to the paragraph.

     (b)  The electricity used during the performance of janitorial service or
the making of alterations or repairs in the Premises by Landlord shall be paid
by Tenant. Landlord reserves the right to provide electricity to Tenant and in
such event Tenant agrees to purchase electricity from Landlord at rates which
shall not exceed the reasonably competitive rates for such service charged to
tenants by other potential utility providers in downtown Chicago, Illinois for
space comparable in size to the space leased to Tenant. Tenant shall make no
alterations or additions to the electric equipment or systems without the prior
written consent of the Landlord in each instance.

     (c)  Tenant shall make all necessary arrangements with the utility provider
chosen by Landlord for furnishing, metering and paying for electricity furnished
by it to Tenant and consumed on the Premises. Landlord shall permit Landlord's
wire and conduits, to the extent available and safely capable, to be used for
such purposes.

6.03 ADDITIONAL AND AFTER-HOUR SERVICES

At Tenant's request, Landlord shall furnish additional quantities of any of the
services or utilities specified in Section 6.01, if Landlord can reasonably do
so, on the terms set forth herein. Tenant shall deliver to Landlord a written
request for such additional services or utilities prior to 2:00 P.M. on Monday
through Friday (except National Holidays) for service on those days, and prior
to 2:00 P.M. on the last business day prior to Saturday, Sunday or a National
Holiday. For services or

                                       14


utilities requested by Tenant and furnished by Landlord, Tenant shall pay to
Landlord as a charge therefor Landlord's prevailing rates for such services and
utilities within thirty (30) days after receipt from Landlord of an invoice for
such services. If Tenant shall fail to make any such payment within sixty (60)
days of the date when due, Landlord may, upon notice to Tenant and in addition
to Landlord's other remedies under this Lease, discontinue any or all of such
additional services.

6.04 PHONE SERVICES

All new telegraph, telephone, and electric connections or modifications to
existing systems which Tenant may desire shall be first approved by Landlord in
writing, before the same are installed, and the location of all wires and the
work in connection therewith shall be subject to the direction of Landlord.
Landlord reserves the right to restrict and control access to telephone
cabinets. Tenant shall be responsible for and shall pay all costs incurred in
connection with the installation of telephone cables and related wiring in the
Premises, including, without limitation, any hook-up, access and maintenance
fees related to the installation of such wires and cables in the Premises and
the commencement of service therein, and the maintenance thereafter of such wire
and cables; and there shall be included in Operating Expenses for the Building
all installation, hook-up or maintenance costs incurred by Landlord in
connection with telephone cables and related wiring in the Building which are
not allocable to any individual users of such service but are allocable to the
Building generally. If Tenant fails to maintain all telephone cables and related
wiring in the Premises and such failure affects or interferes with the operation
or maintenance of any other telephone cables or related wiring in the Building,
Landlord or any vendor hired by Landlord may enter into and upon the Premises in
accordance with the provisions of Section 7.02 and perform such repairs,
restorations or alterations as Landlord deems reasonably necessary in order to
eliminate any such interference (and Landlord may recover from Tenant all of
Landlord's reasonable costs in connection therewith). Tenant agrees that neither
Landlord nor any of its agents or employees shall be liable to Tenant, or any of
Tenant's employees, agents, customers or invitees or anyone claiming through, by
or under Tenant, for any damages, injuries, losses, expenses, claims or causes
of action because of any interruption, diminution, delay or discontinuance at
any time for any reason in the furnishing of any telephone service to the
Premises and the Building unless caused by the negligent acts or omissions or
willful misconduct of Landlord or that of its agents or employees.

6.05 DELAYS IN FURNISHING SERVICES
Tenant agrees that Landlord shall not be in breach of this Lease nor be liable
to Tenant for damages or otherwise, for any failure to furnish, or a delay in
furnishing, or a change in the quantity or character of any service, including
but not limited to phone services as set forth in Section 6.04 hereof, when such
failure or delay is occasioned, in whole or in part, by repairs, improvements or
mechanical breakdowns by the act or default of Tenant or other parties or by an
event of Force Majeure. No such failure or delay shall be deemed to be an
eviction or disturbance of Tenant's use and possession of the Premises, or
relieve Tenant from paying Rent or from performing any other obligations of
Tenant under this Lease, without any deduction or offset. Failure to any extent
to make available, or any slowdown, stoppage, or interruption of, the specified
utility services resulting from Landlord's compliance with any voluntary or
similar governmental or business

                                       15


guidelines now or hereafter published or any requirements now or hereafter
established by any governmental agency, board, or bureau having jurisdiction
over the operation of the Building shall not render Landlord liable in any
respect for damages to either persons, property, or business, nor be construed
as an eviction of Tenant or work an abatement of Rent, nor relieve Tenant of
Tenant's obligations for fulfillment of any covenant or agreement hereof. Should
any equipment or machinery furnished by Landlord break down or for any cause
cease to function properly, Landlord shall use reasonable diligence to repair
same promptly, but Tenant shall have no claim for abatement of Rent or damages
on account of any interruption of service occasioned thereby or resulting
therefrom, except as specifically set forth in this Lease.

     Notwithstanding the above, except for the interruption of the foregoing
services arising by reason of fire or casualty loss provided for in Article 14,
any interruption of the foregoing services which "materially interferes" with
Tenant's use of any part of the Premises (other than an interruption of such
services caused by the act or default of Tenant, its employees, agents,
customers or invitees) for a period of ten (10) consecutive days after notice by
Tenant to Landlord of such interruption of service shall entitle Tenant to abate
the Monthly Base Rent and Rent Adjustment under this Lease for that portion of
the Premises which are untenantable for the period commencing on the eleventh
(11/th/) day of interruption of such services and terminating on the day of
restoration of the services.  For purposes of this Section 6.05, material
interference with Tenant's use of the Premises shall occur when Tenant shall be
prevented from using the Premises for general office purposes as a consequence
of Landlord's inability to provide the services specified in Section 6.01.  In
no event shall Landlord be liable for any damages, consequential or otherwise.
In the event that any of the services referred to in Article Six are not
provided for an aggregate of one hundred eighty (180) days during any twelve
(12) month period and said lack of services is deemed to be a material and
substantial interference with the business of Tenant and such interruption is
due to the fault of Landlord and/or its service provider and not the fault of a
service provider selected by Tenant, Tenant may then terminate this Lease by
giving Landlord ten (10) days written notice of its intention to terminate the
Lease (the "Casualty Termination Notice"), which termination shall be effective
on the tenth day after the date of such Casualty Termination Notice.  If
Landlord gives Tenant notice within said ten (10) day period that it will be
able to complete the repairs to the Premises within the next sixty (60) days,
the Casualty Termination Notice will be null and void and the Lease will remain
in full force and effect as if the Casualty Termination Notice had never been
given. In the event that Landlord fails to complete the repairs to the Premises
within said sixty (60) day period, Tenant may again exercise its right to
terminate this Lease by giving Landlord the Casualty Termination Notice as set
forth above, and the termination shall be effective on the tenth day after the
date of such Casualty Termination Notice.

6.06 CHOICE OF SERVICE PROVIDER

Tenant acknowledges that Landlord may, at Landlord's sole option, to the extent
permitted by applicable law, elect to change, from time to time, the company or
companies which provide services (including, without limitation, electrical
service, gas service and water) to the Building, the Premises and/or its
occupants. Landlord shall endeavor to give Tenant not less than thirty (30) days
notice of any scheduled change. Notwithstanding anything to the contrary set
forth in this Lease, Tenant acknowledges that Landlord has not and does not make
any representations or warranties concerning the identity or identities of the
company or companies which provide services to the

                                       16


Building and the Premises or its occupants and Tenant acknowledges that the
choice of service providers and matters concerning the engagement and
termination thereof shall be solely that of Landlord. The foregoing provision is
not intended to modify, amend, change or otherwise derogate any provision of
this Lease concerning the nature or type of service to be provided or any
specific information concerning the amount thereof to be provided. Tenant agrees
to cooperate with Landlord and each of its service providers in connection with
any change in service or provider.

                                 ARTICLE SEVEN
                   POSSESSION, USE AND CONDITION OF PREMISES

7.01 POSSESSION AND USE OF PREMISES

     (a)  Tenant is already in possession of the Initial Premises under the
Prior Lease. Tenant shall occupy and use the Premises only for the uses
specified in Section 1.01(14) to conduct Tenant's business.

     Notwithstanding the foregoing, Tenant's use of the Premises will include
use of mail carts for internal deliveries on the passenger elevators and
Landlord agrees to such use provided such carts are approved by Landlord and
provided such use does not unreasonably interfere with use by other tenants of
the Building.

     Tenant shall not occupy or use the Premises (or permit the use or occupancy
of the Premises) for any purpose or in any manner which: (1) is unlawful or in
violation of any Law or Environmental Law; (2) may be dangerous to persons or
property or which may increase the cost of, or invalidate, any policy of
insurance carried on the Building or covering its operations; (3) is contrary to
or prohibited by the terms and conditions of this Lease or the rules of the
Building set forth in Article Eighteen; or (4) would tend to create or continue
a nuisance.

     (b)  Tenant as to the Premises and Landlord as to the Property excepting
the Premises shall each comply with all Environmental Laws concerning the proper
storage, handling and disposal of any Hazardous Material. Tenant shall not
generate, store, handle or dispose of any Hazardous Material in, on, or about
the Property without the prior written consent of Landlord, except that Tenant
may use and store small quantities of cleaning and office supplies which may
constitute Hazardous Materials, so long as such use and storage complies with
all applicable Laws. In the event that Tenant is notified of any investigation
or violation of any Environmental Law arising from Tenant's activities at the
Premises, Tenant shall immediately deliver to Landlord a copy of such notice. In
such event or in the event Landlord reasonably believes that a violation of
Environmental Law exists, subject to the terms of this Lease, Landlord may
conduct such tests and studies relating to compliance by Tenant with
Environmental Laws or the alleged presence of Hazardous Materials upon the
Premises as Landlord deems reasonably desirable, all of which shall be completed
at Tenant's expense; provided (i) Landlord gives Tenant reasonable prior notice;
Landlord and Tenant reach a reasonable agreement as to the scheduling of such
tests and studies; and (iii) Landlord does not materially, adversely affect
Tenant's use and occupancy of the Premises and does not cause damage to Tenant's
equipment and leasehold improvements. Landlord's inspection and testing rights
are for Landlord's own protection only, and Landlord has not, and shall not be
deemed to have assumed any responsibility to Tenant or any other party for
compliance with Environmental Laws, as a result of the exercise, or non-exercise
of such

                                       17


rights. In the event Tenant, its agents, servants and/or employees introduces to
the Premises during the Lease Term any Hazardous Material, Tenant shall
indemnify, defend, protect and hold harmless Landlord and any Mortgagee or
Ground Lessor from any and all Premises related clean up losses, claims,
expenses, liability and costs (including reasonable attorneys' fees) which
Landlord may incur by reason of Tenant's introduction to the Premises during the
Lease Term of Hazardous Material. If any Hazardous Material is released,
discharged or disposed of on or about the Property and such release, discharge
or disposal is not caused by Tenant or other occupants of the Premises, or their
employees, agents or contractors, such release, discharge or disposal shall be
deemed casualty damage under Article Fourteen to the extent that the Premises
are affected thereby; in such case, Landlord and Tenant shall have the
obligations and rights respecting such casualty damage provided under such
Article. Any indemnification, exculpation or waiver provision under this Section
7.01(b) shall not be deemed to exculpate or indemnify Landlord against its own
negligence or that of its agents, or servants or employees.

     Notwithstanding anything to the contrary contained in the foregoing,
Landlord represents that, to the best of Landlord's knowledge, on the date this
Lease is fully executed, the Premises and the Building are in compliance of all
Environmental Laws concerning the proper storage, handling and disposal of any
Hazardous Material.  For purposes of this representation, "to the best of
Landlord's knowledge" shall mean the knowledge of Owner's Representative.

     (c)  Landlord and Tenant acknowledge that the Americans With Disabilities
Act of 1990 (42 U.S.C (S)12101 et seq.) and regulations and guidelines
promulgated thereunder, as all of the same may be amended and supplemented from
time to time (collectively referred to herein as the "ADA") establish
requirements for business operations, accessibility and barrier removal, and
that such requirements may or may not apply to the Premises and the Building
depending on, among other things: (1) whether Tenant's business is deemed a
"public accommodation" or "commercial facility", (2) whether such requirements
are "readily achievable", and (3) whether a given alteration affects a "primary
function area" or triggers "path of travel" requirements.  The parties hereby
agree that: (a) Landlord shall be responsible for ADA Title III compliance in
the Common Areas, except as provided below, (b) Tenant shall be responsible for
ADA Title III compliance in the Premises, including any leasehold improvements
or other work to be performed in the Premises under or in connection with this
Lease, (c) Tenant shall be responsible for the cost of, ADA Title III "path of
travel" requirements triggered by alterations in the Premises, and (d) Tenant
shall be responsible for the cost of, ADA Title III compliance in the Common
Areas necessitated by the Building being deemed to be a "public accommodation"
instead of a "commercial facility" as a result of Tenant's use of the Premises.
Tenant shall be solely responsible for requirements under Title I of the ADA
relating to Tenant's employees.

     Landlord represents that, to the best of Landlord's knowledge, on the date
this Lease is executed, the Building and the Common Areas are in compliance with
the ADA.  For purposes of this representation, "to the best of Landlord's
knowledge" shall mean the knowledge of Owner's Representative.

                                       18


7.02 LANDLORD ACCESS TO PREMISES, APPROVALS

     (a)  Tenant shall permit Landlord to erect, use and maintain pipes, ducts,
wiring and conduits in and through the Premises, so long as Tenant's use, layout
or design of the Premises is not materially affected or altered.  Landlord or
Landlord's agents shall have the right to enter upon the Premises in the event
of an emergency, or, after twenty-four (24) hours advance notice to Tenant and
the opportunity to have a representative present, to inspect the Premises, to
perform janitorial and other services, to conduct safety and other testing in
the Premises and to make such routine repairs, alterations, improvements or
additions to the Premises or the Building or other parts of the Property as
Landlord may deem necessary or desirable including, without limitation, all
alterations, improvements and additions in connection with a change in service
provider or providers). Janitorial and cleaning services shall be performed
after normal business hours.  In connection therewith, Landlord shall be allowed
to store on the Premises all necessary supplies and materials. Any entry by
Landlord for any purpose other than in an emergency may be during normal
business hours, upon notice, given at least twenty-four (24) hours in advance
and Landlord shall use reasonable efforts to ensure that any such entry shall
not materially interfere with Tenant's occupancy of the Premises. An emergency
exists where entry is necessary, in Landlord's reasonable judgment, to prevent
or lessen injury to persons or property.

     (b)  If Landlord's entry is to make routine repairs, alterations,
improvements or additions to the Premises or the Building which do not cause any
disruption to Tenant's business, Tenant need not be personally present to permit
such entry into the Premises, but may choose to do so in connection with the
provisions of subsection (a) above.  However, when for any other reason an entry
therein shall be necessary or permissible, Landlord (or Landlord's agents),
after attempting to notify Tenant (unless Landlord believes an emergency
situation exists), may enter the Premises without rendering Landlord or its
agents liable therefor (if during such entry Landlord or Landlord's agent shall
accord reasonable care to Tenant's property), and without relieving Tenant of
any obligations under this Lease.

     (c)  Landlord may enter the Premises for the purpose of conducting such
inspections, tests and studies as Landlord may deem desirable or necessary to
confirm Tenant's compliance with all Laws and Environmental Laws or for other
purposes necessary in Landlord's reasonable judgment to ensure the sound
condition of the Building and the systems serving the Building so long as
Landlord (i) does not materially, adversely affect Tenant's use and occupancy of
the Premises, (ii) does not cause damage to Tenant's equipment and leasehold
improvements and (iii) complies with the provisions of this Section 7.02.
Landlord's rights under this Section 7.02(c) are for Landlord's own protection
only, and Landlord has not, and shall not be deemed to have assumed any
responsibility to Tenant or any other party for compliance with Laws or
Environmental Laws, as a result of the exercise or non-exercise of such rights.

     (d)  Landlord may do any of the foregoing, or undertake any of the
inspection or work described in the preceding paragraphs without such action
constituting an actual or constructive eviction of Tenant, in whole or in part,
or giving rise to an abatement of Rent by reason of loss or interruption of
business of the Tenant, or otherwise.

                                       19


7.03 QUIET ENJOYMENT

Landlord covenants that so long as Tenant is in compliance with the covenants
and conditions set forth in this Lease, Tenant shall have the right to quiet
enjoyment of the Premises without hindrance or interference from Landlord or
those claiming through Landlord, and subject to the rights of any Mortgagee or
ground lessor.

                                 ARTICLE EIGHT
                                  MAINTENANCE

8.01 LANDLORD'S MAINTENANCE

Subject to the provisions of Article Fourteen, Landlord shall maintain and make
necessary repairs to the foundations, roofs, exterior walls, and the structural
elements of the Building, the electrical, plumbing, heating, ventilating and
air-conditioning, mechanical, communication, security and the fire and life
safety systems of the Building and those corridors, washrooms and lobbies which
are Common Areas of the Building in compliance with all Laws and in a manner
consistent with Class A Properties in downtown Chicago, except that: (a)
Landlord shall not be responsible for the maintenance or repair of any floor or
wall coverings in the Premises or any of such systems which are located within
the Premises and are supplemental or special to the Building's standard systems;
and (b) the cost of performing any of said maintenance or repairs whether to the
Premises or to the Building caused by the negligence of Tenant, its employees,
agents, servants, licensees, subtenants, contractors or invitees, shall be paid
by Tenant, subject to the waivers set forth in Section 16.04. Landlord shall not
be liable to Tenant for any expense, injury, loss or damage resulting from work
done in or upon, or in connection with the use of, any adjacent or nearby
building, land, street, or alley.

8.02 TENANT'S MAINTENANCE

Subject to the provisions of Article Fourteen, Tenant, at its expense, shall
keep and maintain the Premises and all Tenant Additions in good order, condition
and repair and in accordance with all Laws and Environmental Laws.  Tenant shall
not permit waste and shall promptly and adequately repair all damages to the
Premises and replace or repair all damaged or broken glass in the interior of
the Premises, fixtures or appurtenances.  Any repairs or maintenance shall be
completed with materials of similar quality to the original materials, all such
work to be completed under the supervision of Landlord.  Any such repairs or
maintenance shall be performed only by contractors or mechanics approved by
Landlord, which approval shall not be unreasonably withheld, and whose work will
not cause or threaten to cause disharmony or interference with Landlord or other
tenants in the Building and their respective agents and contractors performing
work in or about the Building.  If Tenant fails to perform or to diligently
commence performance of any of its obligations set forth in this Section 8.02,
Landlord may, in its sole discretion and upon 24 hours prior notice to Tenant
(except without notice in the case of emergencies), perform the same, and Tenant
shall pay to Landlord any costs or expenses incurred by Landlord upon demand.

                                       20


                                 ARTICLE NINE
                         ALTERATIONS AND IMPROVEMENTS

9.01 TENANT'S ALTERATIONS

     (a)  Except for completion of Tenant Work undertaken by Tenant pursuant to
the Workletter in accordance with the provisions of Section 2.05, Article
Twenty-Seven, Article Twenty-Eight and Article Twenty-Nine of this Lease, the
following provisions shall apply to the completion of any Tenant Alterations:

          (i)  Tenant shall not, except as provided herein, without the prior
     written consent of Landlord, which consent shall not be unreasonably
     withheld, make or cause to be made any Tenant Alterations in or to the
     Premises or any Building systems serving the Premises.  Prior to making any
     Tenant Alterations, Tenant shall give Landlord ten (10) days prior written
     notice (or such earlier notice as would be necessary pursuant to applicable
     Laws) to permit Landlord sufficient time to post appropriate notices of
     non-responsibility.  Subject to all other requirements of this Article
     Nine, Tenant may undertake Decoration work and engage such contractors
     and/or subcontractors as Tenant desires without Landlord's prior written
     consent so long as such contractors and/ or subcontractors do not cause or
     threaten to cause disharmony or interference with Landlord or other tenants
     in the Building and their respective agents and contractors performing work
     in or about the Building.  Tenant shall furnish Landlord with the names and
     addresses of all contractors and subcontractors and copies of all
     contracts.  All Tenant Alterations shall be completed at such time and in
     such manner as Landlord may from time to time reasonably designate in
     cooperation with Tenant in order to minimize the time it takes and the cost
     of such Tenant Alterations, and only by contractors or mechanics approved
     by Landlord, which approval shall not be unreasonably withheld, and whose
     work will not cause or threaten to cause disharmony or interference with
     Landlord or other tenants in the Building and their respective agents and
     contractors performing work in or about the Building.  Landlord may further
     condition its consent upon Tenant furnishing to Landlord and Landlord
     approving prior to the commencement of any work or delivery of materials to
     the Premises related to the Tenant Alterations such of the following as
     specified by Landlord:  architectural plans and specifications, opinions
     from engineers reasonably acceptable to Landlord stating that the Tenant
     Alterations will not in any way adversely affect the Building's systems,
     including, without limitation, the mechanical, heating, plumbing, security,
     ventilating, air-conditioning, electrical, and the fire and life safety
     systems in the Building, necessary permits and licenses, including, but not
     limited to the substitution of Tenant's self-certification in connection
     therewith as may be acceptable to the City of Chicago Building Department
     from time to time, certificates of insurance, and such other documents in
     such form reasonably requested by Landlord.  Upon completion of the Tenant
     Alterations, Tenant shall deliver to Landlord final updated construction
     drawings and a digitized (if available) set of plans and specifications for
     the Tenant Alterations in connection with any affected area.

          (ii) Tenant shall pay the cost of all Tenant Alterations and the cost
     of decorating the Premises and any work to the Building occasioned thereby.
     In connection with completion of any Tenant Alterations, Landlord agrees it
     will not impose any fees of any

                                       21


     nature upon Tenant for any Tenant Alterations performed pursuant to this
     section so long as Landlord is not supervising or acting in the capacity of
     general contractor or construction manager for such work. Upon completion
     of Tenant Alterations, Tenant shall furnish Landlord with contractors'
     affidavits and full and final waivers of lien and receipted bills covering
     all labor and materials expended and used in connection therewith and such
     other documentation reasonably requested by Landlord or Mortgagee.

          (iii)  Tenant agrees to complete all Tenant Alterations (i) in
     accordance with all Laws, Environmental Laws, all requirements of
     applicable insurance companies and in accordance with Landlord's standard
     construction rules and regulations, and (ii) in a good and workmanlike
     manner with the use of good grades of materials.  Tenant shall notify
     Landlord immediately if Tenant receives any notice of violation of any Law
     in connection with completion of any Tenant Alterations and shall
     immediately take such steps as are necessary to remedy such violation.  In
     no event shall such supervision or right to supervise by Landlord nor shall
     any approvals given by Landlord under this Lease constitute any warranty by
     Landlord to Tenant of the adequacy of the design, workmanship or quality of
     such work or materials for Tenant's intended use or of compliance with the
     requirements of Section 9.01(a)(3)(i) and (ii) above or impose any
     liability upon Landlord in connection with the performance of such work.

     (b)  All Tenant Additions whether installed by Landlord or Tenant, shall
without compensation or credit to Tenant, become part of the Premises and the
property of Landlord at the time of their installation and shall remain in the
Premises, unless pursuant to Article Twelve, Tenant may remove them or is
required to remove them at Landlord's request.

9.02 LIENS

Tenant shall not permit any lien or claim for lien of any mechanic, laborer or
supplier or any other lien to be filed against the Building, the Land, the
Premises, or any other part of the Property arising out of work performed, or
alleged to have been performed by, or at the direction of, or on behalf of
Tenant.  If any such lien or claim for lien is filed, Tenant shall within thirty
(30) days of receiving notice of such lien or claim (a) have such lien or claim
for lien released of record or (b) deliver to Landlord  a bond or other security
in form, content, amount, and issued by surety, reasonably satisfactory to
Landlord, indemnifying, protecting, defending and holding harmless the
Indemnitees against all costs and liabilities resulting from such lien or claim
for lien and the foreclosure or attempted foreclosure thereof.  If Tenant fails
to take any of the above actions, Landlord, in addition to its rights and
remedies under Article Eleven, without investigating the validity of such lien
or claim for lien, may pay or discharge the same and Tenant shall, as payment of
additional Rent hereunder, reimburse Landlord upon demand for the amount so paid
by Landlord, including Landlord's expenses and attorneys' fees.

                                       22


                                  ARTICLE TEN
                           ASSIGNMENT AND SUBLETTING

10.01  ASSIGNMENT AND SUBLETTING

     (a)  Except as otherwise provided in this Section, without the prior
written consent of Landlord, Tenant may not sublease, assign, mortgage, pledge,
hypothecate or otherwise transfer or permit the transfer of this Lease or the
encumbering of Tenant's interest therein in whole or in part, by operation of
law or otherwise or permit the use or occupancy of the Premises, or any part
thereof, by anyone other than Tenant. If Tenant desires to enter into any
sublease of the Premises or assignment of this Lease, Tenant shall deliver
written notice thereof to Landlord ("Tenant's Notice"), together with the
identity of the proposed subtenant or assignee and the proposed principal terms
thereof and financial and other information sufficient for Landlord to make an
informed judgment with respect to such proposed subtenant or assignee at least
thirty (30) days prior to the commencement date of the term of the proposed
sublease or assignment. If Tenant proposes to sublease less than all of the
Rentable Area of the Premises, the space proposed to be sublet and the space
retained by Tenant must each be a marketable unit as reasonably determined by
Landlord and otherwise in compliance with all Laws. Landlord shall notify Tenant
in writing of its approval or disapproval of the proposed sublease or assignment
or its decision to exercise its rights under Section 10.02 within thirty (30)
days after receipt of Tenant's Notice (and all required information) and
Landlord's notification shall include the reasons for any disapproval. Tenant
shall submit for Landlord's approval (which approval shall not be unreasonably
withheld) any advertising which Tenant or its agents intend to use with respect
to the space proposed to be sublet.

     (b)  With respect to Landlord's consent to an assignment or sublease,
Landlord may take into consideration any factors which Landlord may deem
reasonably relevant, and the reasons for which Landlord's denial shall be deemed
to be reasonable shall include, without limitation, the following:

          (i)   in Landlord's reasonable judgment, the business reputation or
     credit standing of any proposed assignee is not acceptable to Landlord; or

          (ii)  in Landlord's reasonable judgment, any proposed assignee's or
     sublessee's use of the Premises would breach Section 7.01 of the Lease or
     would breach the provisions of any other leases of tenants in the Building;
     or

          (iii) the proposed assignee or sublessee is either a governmental
     agency, a school or similar operation, or a medical related practice
     unless, prior to Tenant's request, Landlord has entered into a lease with a
     substantially similar medical related practice, in which case Landlord
     shall not deny Tenant's request to sublease the Premises or assign the
     Lease to such entity merely on that basis; or

          (iv)  the proposed sublessee or assignee is an existing tenant and
     Landlord is able to accommodate such sublessee or assignee in other space
     in the Building; provided, however, that if Landlord does not have the
     space in the building to accommodate the proposed sublessee or assignee
     (i.e. the proposed sublessee or assignee is in need of 10,000 rentable
     square feet and there is less then 10,000 rentable square feet available in
     a

                                       23


     contiguous suite in the building) then the fact that the sublessee or
     assignee is an existing tenant of the Building shall neither be a relevant
     factor in Landlord's determination whether to consent to such sublease or
     assignment nor a reason for Landlord's denial of such consent; or

     In the event Landlord sells the Building to an entity unrelated to
     Metropolitan Life Insurance Company, a New York corporation, then this
     subparagraph (iv) shall be replaced with the following:

          "the proposed sublessee or assignee is an existing tenant and Landlord
          is able to accommodate such sublessee or assignee in other space in
          the Building; provided, however, that if Landlord and Tenant's
          proposed sublessee or assignee cannot agree on the terms of a lease
          for other space in the Building within 120 days of Tenant's initial
          notification to Landlord that said proposed sublessee or assignee is
          interested in Tenant's space and thereafter cannot execute and deliver
          a lease for such other space in the Building within 180 days of
          Tenant's initial notification to Landlord that said proposed sublessee
          or assignee is interested in Tenant's space,"

          (v)   the proposed sublessee or assignee would negatively impact the
     pedestrian traffic to and from the Building; or

          (vi)  a Default then exists under the Lease, or a fact or condition
     exists, which but for the giving of notice or the passage of time would
     constitute a Default; or

          (vii) the assignment of the Lease would assign less than the entire
     Premises.

     (c)  If Landlord chooses not to recapture the space proposed to be
subleased or assigned as provided in Section 10.02, Landlord shall not
unreasonably withhold its consent to a subletting or assignment under this
Section 10.01. Any approved sublease or assignment shall be expressly subject to
the terms and conditions of this Lease. Any such subtenant or assignee shall
execute such documents as Landlord may reasonably require to evidence such
subtenant or assignee's assumption of such obligations and liabilities. Within a
reasonable period of time after the effective date of an assignment or sublease,
Tenant shall deliver to Landlord a copy of all agreements executed by Tenant and
the proposed subtenant and assignee with respect to the Premises. Landlord's
approval of a sublease or assignment shall not constitute a waiver of Tenant's
obligation to obtain Landlord's consent to further assignments or subleases.

     (d)  For purposes of this Article Ten, an assignment shall be deemed to
include a change in the majority control of Tenant, resulting from any transfer,
sale or assignment of shares of stock of Tenant occurring by operation of law or
otherwise if Tenant is a corporation whose shares of stock are not traded
publicly. If Tenant is a partnership, any change in the partners of Tenant
owning a majority interest in Tenant shall be deemed to be an assignment.

     (e)  Notwithstanding anything to the contrary contained in this Article
Ten, Tenant shall have the right, without the prior written consent of Landlord,
to sublease the Premises to an Affiliate, or to assign this Lease to an
Affiliate, provided, (i) prior to the effective date of the assignment or
sublease, Tenant gives Landlord written notice of its intention to assign or
sublease

                                       24


and (ii) within a reasonable period of time after the effective date of the
assignment or sublease, the assignee or sublessee shall execute documents
reasonably satisfactory to Landlord to evidence such subtenant or assignee's
assumption of the obligations and liabilities of Tenant under this Lease, except
in the case of any assignment which occurs by operation of law (and without a
written assignment) as a consequence of merger, consolidation or non-bankruptcy
reorganization and (iii) within a reasonable period of time after the effective
date of such assignment or sublease, Tenant shall give notice to Landlord which
notice shall include the full name and address of the assignee or subtenant, a
copy of all agreements executed between Tenant and the assignee or subtenant
with respect to the Premises; and such documents or information which Landlord
reasonably requests for the purpose of substantiating whether or not the
assignment or sublease is to an Affiliate.

10.02  RECAPTURE

Except for subleases and assignments made pursuant to Section 10.01(e) to which
this Section 10.02 does not apply, and then only if Tenant proposes to sublet or
assign greater than 25% of its then leased space in the Building, Landlord shall
have the option to exclude from the Premises covered by this Lease
("recapture"), the space proposed to be sublet or subject to the assignment,
effective as of the proposed commencement date of such sublease or assignment.
If Landlord elects to recapture and gives Tenant notice of such election, Tenant
shall have ten (10) days in which to withdraw such sublease or assignment by
written notice to Landlord. If Landlord elects to recapture and Tenant does not
withdraw the request to sublease or assign, Tenant shall surrender possession of
the space proposed to be subleased or subject to the assignment to Landlord on
the effective date of recapture of such space from the Premises such date being
the Termination Date for such space. Effective as of the date of recapture of
any portion of the Premises pursuant to this section, the Monthly Base Rent,
Rentable Area of the Premises and Tenant's Share shall be adjusted accordingly.

10.03  EXCESS RENT

Except for subleases and assignments made pursuant to Section 10.01(e) and to
which Section 10.02 does not apply, Tenant shall pay Landlord on the first day
of each month during the term of the sublease or assignment, fifty percent (50%)
of the amount by which the sum of all rent and other consideration (direct or
indirect) due from the subtenant or assignee for such month exceeds: (i) that
portion of the Monthly Base Rent and Rent Adjustments due under this Lease for
said month which is allocable to the space sublet or assigned; and (ii) the
following costs and expenses for the subletting or assignment of such space: (1)
brokerage commissions and attorneys' fees and expenses, (2) advertising for
subtenants or assignees; (3) the actual costs paid in making any improvements or
substitutions in the Premises required by any sublease or assignment and (4)
"free rent" periods, costs of any inducements or concessions given to subtenant
or assignee, moving costs, and other amounts in respect of such subtenant's or
assignee's other leases or occupancy arrangements.

     In the event Landlord sells the Building to an entity unrelated to
Metropolitan Life Insurance Company, a new York corporation, then the following
language shall be added at this point in the document:

                                       25


   "and (5) the annual unamortized portion of Tenant's leasehold improvements.
   Said leasehold improvements shall be capped at $100/rentable square foot (or
   the Year 2000 equivalent thereof as per RS Means Building Construction Cost
   Data or its equivalent or successor) on the sublease premises as defined
   herein and shall be capped at a proportionate share thereof at the time of
   any future sublease (taking into consideration, the length and point in time
   of such subleases)."

10.04  TENANT LIABILITY

In the event of any sublease or assignment, whether or not with Landlord's
consent, Tenant shall not be released or discharged from any liability, whether
past, present or future, under this Lease, including any liability arising from
the exercise of any renewal or expansion option, to the extent expressly
permitted by Landlord. Tenant's liability shall remain primary, and in the event
of default by any subtenant, assignee or successor of Tenant in performance or
observance of any of the covenants or conditions of this Lease, Landlord may
proceed directly against Tenant without the necessity of exhausting remedies
against said subtenant, assignee or successor. If Landlord grants consent to
such sublease or assignment, Tenant shall pay all reasonable attorneys' fees and
expenses incurred by Landlord with respect to such assignment or sublease.  In
addition, if Tenant has any options to extend the term of this Lease or to add
other space to the Premises, such options may be available to any subtenant or
assignee, directly or indirectly, upon Landlord's express written consent, which
may be withheld in Landlord's sole discretion, unless specifically provided
otherwise in this Lease.

10.05  ASSUMPTION AND ATTORNMENT

If Tenant shall assign this Lease as permitted herein, the assignee shall
expressly assume all of the obligations of Tenant hereunder in a written
instrument satisfactory to Landlord and furnished to Landlord not later than
fifteen (15) days prior to the effective date of the assignment.  If Tenant
shall sublease the Premises as permitted herein, Tenant shall, at Landlord's
option, within fifteen (15) days following any request by Landlord, obtain and
furnish to Landlord the written agreement of such subtenant to the effect that
the subtenant will attorn to Landlord and will pay all subrent directly to
Landlord.

                                ARTICLE ELEVEN
                             DEFAULT AND REMEDIES

11.01  EVENTS OF DEFAULT

The occurrence or existence of any one or more of the following shall constitute
a "Default" by Tenant under this Lease:

     (a)  Tenant fails to pay any installment or other payment of Rent including
Rent Adjustment Deposits or Rent Adjustments within five (5) days after the date
when due and such failure continues for five (5) business days after Landlord
sends Tenant a notice of default;

                                       26


     (b)  Tenant fails to observe or perform any of the other covenants,
conditions or provisions of this Lease or the Workletter and fails to cure such
default within thirty (30) days after written notice thereof to Tenant;
provided, that if such default is not susceptible to being cured within such
thirty (30) day period but Tenant promptly commences and diligently pursues such
cure, said thirty (30) day period shall be extended so long as Tenant is
actively, diligently and continuously attempting to effectuate such cure (and
furnishing Landlord with weekly written status reports on such efforts), unless
the default involves a hazardous condition, which shall be cured forthwith, or
unless the failure to perform is a Default for which this Lease specifies there
is no cure or grace period;

     (c)  the interest of Tenant in this Lease is levied upon under execution or
other legal process;

     (d)  a petition is filed by or against Tenant to declare Tenant bankrupt or
seeking a plan of reorganization or arrangement under any Chapter of the
Bankruptcy Act, or any amendment, replacement or substitution therefor, or to
delay payment of, reduce or modify Tenant's debts, which in the case of an
involuntary action is not discharged within ninety (90) days;

     (e)  Tenant is declared insolvent by law or any assignment of Tenant's
property is made for the benefit of creditors;

     (f)  a receiver is appointed for Tenant or Tenant's property, which
appointment is not discharged within ninety (90) days;

     (g)  any action taken by or against Tenant to reorganize or modify Tenant's
capital structure in a materially adverse way which in the case of an
involuntary action is not discharged within sixty (60) days; or

     (h)  upon the dissolution of Tenant.

11.02  LANDLORD'S REMEDIES

     (a)  If a Default occurs, Landlord shall have the rights and remedies
hereinafter set forth, which shall be distinct and cumulative:  (i) Landlord may
terminate this Lease by giving Tenant notice of Landlord's election to do so, in
which event, the term of this Lease shall end and all of Tenant's rights and
interests shall expire on the date stated in such notice; (ii) Landlord may
terminate Tenant's right of possession of the Premises without terminating this
Lease by giving notice to Tenant that Tenant's right of possession shall end on
the date specified in such notice; or (iii) Landlord may enforce the provisions
of this Lease and may enforce and protect the rights of the Landlord hereunder
by a suit or suits in equity or at law for the specific performance of any
covenant or agreement contained herein, or for the enforcement of any other
appropriate legal or equitable remedy, including recovery of all monies due or
to become due for the balance of the Term from Tenant under any of the
provisions of this Lease.

     (b)  In the event that Landlord terminates the Lease, Landlord shall be
entitled to recover as damages for loss of the bargain and not as a penalty, the
present value of the excess, if any, of (i)

                                       27


Rent for the balance of the Term, plus all Landlord's reasonable expenses of
reletting, including without limitation, repairs, alterations, improvements,
additions, decorations, legal fees and brokerage commissions (collectively, the
"Reletting Expenses"), over (ii) the aggregate amount of Rent actually collected
by Landlord for the Premises. In the event that Landlord receives a judgment
against Tenant before any Rent is actually collected by Landlord for the
Premises under this Section 11.02(b), Landlord shall recalculate the foregoing
upon the receipt of any such Rent and shall remit the excess, if any, to Tenant.

     (c)  In the event Landlord proceeds pursuant to subparagraph (a)(ii) above,
Landlord may, but shall not be obligated to (except as may be required by law),
relet the Premises, or any part thereof for the account of Tenant, for such rent
and term and upon such terms and conditions as are reasonably acceptable to
Landlord. For purposes of such reletting, Landlord is authorized to decorate,
repair, alter and improve the Premises to the extent reasonably necessary or
desirable. If the Premises are relet and the consideration realized therefrom
after payment of all Landlord's Reletting Expenses, is insufficient to satisfy
the payment when due of Rent reserved under this Lease for any monthly period,
then Tenant shall pay Landlord upon demand any such deficiency monthly. If such
consideration is greater than the amount necessary to pay the full amount of the
Rent, the full amount of such excess shall be retained by Landlord and shall in
no event be payable to Tenant. Tenant agrees that Landlord may file suit to
recover any sums due to Landlord hereunder from time to time and that such suit
or recovery of any amount due Landlord hereunder shall not be any defense to any
subsequent action brought for any amount not theretofore reduced to judgment in
favor of Landlord.

     (d)  In the event a Default occurs, Landlord may, at Landlord's option,
enter into the Premises, remove Tenant's property, fixtures, furnishings, signs
and other evidences of tenancy, and take and hold such property; provided,
however, that such entry and possession shall not terminate this Lease or
release Tenant, in whole or in part, from Tenant's obligation to pay the Rent
reserved hereunder for the full Term or from any other obligation of Tenant
under this Lease. Any and all property which may be removed from the Premises by
Landlord pursuant to the authority of the Lease or law, to which Tenant is or
may be entitled, may be handled, removed or stored by Landlord at the risk, cost
and expense of Tenant, and Landlord shall in no event be responsible for the
value, preservation or safekeeping thereof. Tenant shall pay Landlord, upon
demand, any and all reasonable expenses incurred in such removal and all storage
charges against such property so long as the same shall be in the Landlord's
possession or under the Landlord's control. Any such property of Tenant not
retaken from storage by Tenant within thirty (30) days after the Termination
Date, shall be conclusively presumed to have been conveyed by Tenant to Landlord
under this Lease as a bill of sale without further payment or credit by Landlord
to Tenant.

11.03  ATTORNEY'S FEES

Except as set forth in Article Thirty-Three of this Lease, Tenant shall pay upon
demand, all costs and expenses, including reasonable attorneys' fees, incurred
by Landlord in any litigation, negotiation or transaction in which Tenant causes
Landlord, without Landlord's fault, to become involved or concerned. Landlord
shall pay upon demand, all costs and expenses, including reasonable attorneys'
fees, incurred by Tenant in any litigation, negotiation or transaction in which
Landlord causes Tenant, without Tenant's fault, to become involved or concerned.
In the case of a

                                       28


dispute between the parties hereto, the prevailing party in such dispute shall
not be responsible for its attorney fees and the other party shall pay all such
costs.

11.04  BANKRUPTCY

The following provisions shall apply in the event of the bankruptcy or
insolvency of Tenant:

     (a)  In connection with any proceeding under Chapter 7 of the Bankruptcy
Code where the trustee of Tenant elects to assume this Lease for the purposes of
assigning it, such election or assignment, may only be made upon compliance with
the provisions of (b) and (c) below, which conditions Landlord and Tenant
acknowledge to be commercially reasonable. In the event the trustee elects to
reject this Lease then Landlord shall immediately be entitled to possession of
the Premises without further obligation to Tenant or the trustee.

     (b)  Any election to assume this Lease under Chapter 11 or 13 of the
Bankruptcy Code by Tenant as debtor-in-possession or by Tenant's trustee (the
"Electing Party") must provide for:

          The Electing Party to cure or provide to Landlord adequate assurance
that it will cure all monetary defaults under this Lease within fifteen (15)
days from the date of assumption and it will cure all non-monetary defaults
under this Lease within thirty (30) days from the date of assumption. Landlord
and Tenant acknowledge such condition to be commercially reasonable.

     (c)  If the Electing Party has assumed this Lease or elects to assign
Tenant's interest under this Lease to any other person, such interest may be
assigned only if the intended assignee has provided adequate assurance of future
performance (as herein defined), of all of the obligations imposed on Tenant
under this Lease.

          For the purposes hereof, "adequate assurance of future performance"
means that Landlord has ascertained that each of the following conditions has
been satisfied:

          The assignee has submitted a current financial statement, certified by
its chief financial officer, which shows a net worth and working capital in
amounts sufficient to assure the future performance by the assignee of Tenant's
obligations under this Lease; and

          Landlord has obtained consents or waivers from any third parties which
may be required under a lease, mortgage, financing arrangement, or other
agreement by which Landlord is bound, to enable Landlord to permit such
assignment.

     (d)  Landlord's acceptance of rent or any other payment from any trustee,
receiver, assignee, person, or other entity will not be deemed to have waived,
or waive, the requirement of Landlord's consent, Landlord's right to terminate
this Lease for any transfer of Tenant's interest under this Lease without such
consent, or Landlord's claim for any amount of Rent due from Tenant.

                                       29


11.05  LANDLORD'S DEFAULT

Landlord shall be in default hereunder in the event Landlord has not begun and
pursued with reasonable diligence the cure of any failure of Landlord to meet
its obligations hereunder within thirty (30) days of the receipt by Landlord of
written notice from Tenant of the alleged failure to perform. In no event shall
Tenant have the right to terminate or rescind this Lease as a result of
Landlord's default as to any covenant or agreement contained in this Lease.
Tenant hereby waives such remedies of termination and rescission and hereby
agrees that Tenant's remedies for default hereunder and for breach of any
promise or inducement shall be limited to a suit for damages and/or injunction.
In addition, Tenant hereby covenants that, prior to the exercise of any such
remedies, it will give the mortgagees holding mortgages on the Building notice
and a reasonable time to cure any default by Landlord as set forth in Section
23.02.

     Notwithstanding anything to the contrary contained in this Lease, if
Landlord shall at any time be in default in the performance of any obligation
under this Lease and Tenant shall have obtained a monetary judgment from a court
of competent jurisdiction, which judgment is not subject to appeal or otherwise
stayed by Landlord and which judgment had not been paid by Landlord to Tenant
within sixty (60) days after final entry, Tenant shall have the right to offset
the amount of such monetary judgment against payment of the next succeeding
payments of Rent (including, without limitation, Rent Adjustments) due under
this Lease upon prior written notice to Landlord of its intention to do so.

                                ARTICLE TWELVE
                             SURRENDER OF PREMISES

12.01  IN GENERAL

Upon the Termination Date, Tenant shall surrender and vacate the Premises
immediately and deliver possession thereof to Landlord in a clean, good and
tenantable condition, ordinary wear and tear, and damage caused by Landlord
excepted. Tenant shall deliver to Landlord all keys to the Premises. Tenant
shall remove from the Premises all movable personal property of Tenant and
Tenant's trade fixtures. Tenant shall be entitled to remove such Tenant
Additions which at the time of their installation Landlord and Tenant agreed may
be removed by Tenant. In addition, Landlord shall designate, concurrently with
written consent of Tenant's alteration plans, which permanently attached and
moveable additions, non-trade fixtures, equipment and other improvements, if
any, Tenant shall be required to remove upon Lease termination, and such
designation shall not be subject to amendment except by written agreement
between Landlord  and Tenant.  Tenant shall also remove such other Tenant
Additions as required by Landlord, including, but not limited to, any Tenant
Additions containing Hazardous Materials. Notwithstanding anything to the
contrary contained herein, Landlord and Tenant hereby agree that Exhibit H
                                                                 ---------
attached hereto and made a part hereof contains a list of categories for
removal.  The types of items listed thereon shall also be removed by Tenant.
Tenant immediately shall repair all damage resulting from removal of any of
Tenant's property, furnishings or Tenant Additions and shall restore the
Premises to a tenantable condition as reasonably determined by Landlord. In the
event possession of the Premises is not delivered to Landlord when required
hereunder, or if Tenant shall fail to remove those items described herein,
Landlord may (but shall not be obligated to), at

                                       30


Tenant's expense, remove any of such property and store, sell or otherwise deal
with such property as provided in Section 11.02(d), including the waiver and
indemnity obligations provided in that Section, and undertake, at Tenant's
expense such restoration work as Landlord deems necessary or advisable.

     Notwithstanding anything to the contrary contained herein, Tenant shall, at
its sole cost and expense, demolish and remove the Bridge and repair any damage
occasioned thereby, including, without limitation, restoration of the facade of
the Building, prior to expiration of the Term hereof or upon any termination of
this Lease or Tenant's possession under this Lease.

12.02  LANDLORD'S RIGHTS

All property which may be removed from the Premises by Landlord shall be
conclusively presumed to have been abandoned by Tenant and Landlord may deal
with such property as provided in Section 11.02(d). Tenant shall also reimburse
Landlord for all costs and expenses incurred by Landlord in removing any of
Tenant Additions and in restoring the Premises to the condition required by this
Lease at the Termination Date.

                               ARTICLE THIRTEEN
                                 HOLDING OVER

Tenant shall pay Landlord double the monthly Rent payable for the month
immediately preceding the holding over (including increases for Rent Adjustments
which Landlord may reasonably estimate) for each month or portion thereof that
Tenant retains possession of the Premises, or any portion thereof, after the
Termination Date (without reduction for any partial month that Tenant retains
possession). Tenant shall also pay all damages sustained by Landlord by reason
of such retention of possession. The provisions of this Article shall not
constitute a waiver by Landlord of any re-entry rights of Landlord and Tenant's
continued occupancy of the Premises shall be as a tenancy in sufferance.

                               ARTICLE FOURTEEN
                       DAMAGE BY FIRE OR OTHER CASUALTY

14.01  SUBSTANTIAL UNTENANTABILITY

     (a)  If any fire or other casualty (whether insured or uninsured) renders
all or a substantial portion of the Premises or the Building untenantable,
Landlord shall, within sixty (60) days after the occurrence of such damage,
estimate the length of time that will be required to Substantially Complete the
repair and restoration and shall by notice advise Tenant of such estimate
("Landlord's Notice"). If Landlord estimates that the amount of time required to
Substantially Complete such repair and restoration will exceed one hundred
eighty (180) days from the date such damage occurred, then Landlord, or Tenant
if (i) all or a substantial portion of the Premises is rendered untenantable or
(ii) a substantial portion of the Building is rendered untenantable or the
portion directly affects Tenant's access to the Premises or its ability to use
the Common Areas, shall have the right to terminate this Lease as of the date of
such damage upon giving written notice to the other at any time within twenty
(20) days after delivery of Landlord's Notice, provided that if

                                       31


Landlord so chooses, Landlord's Notice may also constitute such notice of
termination. In addition, if such damage is to the Premises and occurs during
the last twelve (12) months of the Term, either Tenant or Landlord shall have
the right to terminate this Lease as of the date of such casualty by giving
written notice thereof to the other within twenty (20) days after the date of
such casualty.

     As used in this Lease "untenantable" means reasonably incapable of being
occupied for its intended use due to damage to the Premises or Building.
Notwithstanding anything to the contrary contained herein, neither the Premises
nor any portion of the Premises shall be deemed untenantable if Landlord is not
required to repair or restore same (or if Landlord is required to repair or
restore same, then following such time as Landlord has Substantially Completed
the repair or restoration work required to be performed by Landlord) or if
Tenant continues to actually occupy the subject portion of the Premises for the
ordinary conduct of its business (and not just for the retrieval of files and
other information necessary to continue its business operations at another
location).

     (b)  Unless this Lease is terminated as provided in the preceding
subparagraph, Landlord shall proceed with reasonable promptness to repair and
restore the Premises to its condition as existed prior to such casualty, subject
to reasonable delays for insurance adjustments and Force Majeure delays, and
also subject to zoning laws and building codes then in effect. Landlord shall
have no liability to Tenant, and Tenant shall not be entitled to terminate this
Lease if such repairs and restoration are not in fact completed within the time
period estimated by Landlord so long as Landlord shall proceed with reasonable
diligence to complete such repairs and restoration.

     (c)  Tenant acknowledges that Landlord shall be entitled to the full
proceeds of any insurance coverage, whether carried by Landlord or Tenant, for
damages to the Premises, except for those proceeds of Tenant's insurance of its
own personal property, fixtures and equipment which would be or are required to
be removable by Tenant at the Termination Date. All such insurance proceeds
shall be payable to Landlord whether or not the Premises are to be repaired and
restored.

     (d)  Notwithstanding anything to the contrary herein set forth: (i)
Landlord shall have no duty pursuant to this Section to repair or restore any
portion of any Tenant Additions or to expend for any repair or restoration of
the Premises or Building amounts in excess of insurance proceeds paid to
Landlord and available for repair or restoration plus any deductible amounts
applicable thereto; and (ii) Tenant shall not have the right to terminate this
Lease pursuant to this Section if any damage or destruction was caused by the
act or neglect of Tenant, its agent or employees.

     (e)  Any repair or restoration of the Premises performed by Tenant shall be
in accordance with the provisions of Article Nine hereof.

14.02  INSUBSTANTIAL UNTENANTABILITY

If the Premises or the Building is damaged by a casualty but neither is rendered
substantially untenantable and Landlord estimates, within sixty (60) days after
the occurrence of such damage, that the time to Substantially Complete the
repair or restoration will not exceed one hundred eighty

                                       32


(180) days from the date such damage occurred, then Landlord shall proceed to
repair and restore the Building or the Premises other than Tenant Additions,
with reasonable promptness, unless such damage is to the Premises and occurs
during the last twelve (12) months of the Term, in which event either Tenant or
Landlord shall have the right to terminate this Lease as of the date of such
casualty by giving written notice thereof to the other within twenty (20) days
after the date of such casualty. [Notwithstanding the aforesaid, Landlord's
obligation to repair shall be limited in accordance with the provisions of
Section 14.01 (d)(i) above.]

14.03  RENT ABATEMENT

Except for the negligence or willful misconduct of Tenant or its agents,
employees, contractors or invitees, if all or any part of the Premises are
rendered untenantable by fire or other casualty and this Lease is not
terminated, Monthly Base Rent and Rent Adjustments shall abate for that part of
the Premises which is untenantable on a per diem basis from the date of the
casualty until sixty (60) days after Landlord has Substantially Completed the
repair and restoration work in the Premises which it is required to perform.

                                ARTICLE FIFTEEN
                                EMINENT DOMAIN

15.01  TAKING OF WHOLE OR SUBSTANTIAL PART

In the event the whole or any substantial part of the Building or of the
Premises is taken or condemned by any competent authority for any public use or
purpose (including a deed given in lieu of condemnation) and is thereby rendered
untenantable, this Lease shall terminate as of the date title vests in such
authority, and Monthly Base Rent and Rent Adjustments shall be apportioned as of
the Termination Date. Notwithstanding anything to the contrary herein set forth,
in the event the taking is temporary (for less than one hundred eighty (180)
days), Landlord may elect either (i) to terminate this Lease or (ii) permit
Tenant to receive the entire award with respect to the Premises in which case
Tenant shall continue to pay Rent and this Lease shall not terminate.

15.02  TAKING OF PART

In the event a part of the Building or the Premises is taken or condemned by any
competent authority (or a deed is delivered in lieu of condemnation) and
Landlord estimates, within sixty (60) days after the occurrence of such taking,
that the time to Substantially Complete the repair or restoration will not
exceed one hundred eighty (180) days from the date of such taking, then
Landlord, upon receipt and to the extent of the award in condemnation (or
proceeds of sale) shall make necessary repairs and restorations to the Premises
(exclusive of Tenant Additions) and to the Building to the extent necessary to
constitute the portion of the Building not so taken or condemned as a complete
architectural and economically efficient unit, unless such taking is to the
Premises and occurs during the last twelve (12) months of the Term, in which
event either Tenant or Landlord shall have the right to terminate this Lease as
of the date of such taking by giving written notice thereof to the other within
twenty (20) days after the date of such casualty.

                                       33


     In the event a part of the Building or the Premises is taken or condemned
by any competent authority (or a deed is delivered in lieu of condemnation) and
this Lease is not terminated, the Lease shall be amended to reduce the Monthly
Base Rent and reduce or increase, as the case may be, Tenant's Proportionate
Share to reflect the Rentable Area of the Premises or Building, as the case may
be, remaining after any such taking or condemnation. Notwithstanding the
foregoing, if as a result of any taking, or a governmental order that the grade
of any street or alley adjacent to the Building is to be changed and such taking
or change of grade makes it necessary or desirable to substantially remodel or
restore the Building or prevents the economical operation of the Building,
Landlord shall have the right to terminate this Lease upon ninety (90) days
prior written notice to Tenant.

15.03  COMPENSATION

Landlord shall be entitled to receive the entire award (or sale proceeds) from
any such taking, condemnation or sale without any payment to Tenant, and Tenant
hereby assigns to Landlord Tenant's interest, if any, in such award; provided,
however, Tenant shall have the right separately to pursue against the condemning
authority a separate award in respect to any damages sustained by Tenant,
including without limitation, Tenant's relocation expenses, loss to Tenant's
business, and the like, and of the loss, if any, to Tenant Additions paid for by
Tenant minus any credit or allowance from Landlord so long as there is no
diminution of Landlord's award as a result.

                                ARTICLE SIXTEEN
                                   INSURANCE

16.01  TENANT'S INSURANCE

Tenant, at Tenant's expense, agrees to maintain in force, with a company or
companies reasonably acceptable to Landlord, during the Term: (a) Commercial
General Liability Insurance on a primary basis and without any right of
contribution from any insurance carried by Landlord covering the Premises on an
occurrence basis against all claims for personal injury, bodily injury, death
and property damage, including contractual liability covering the
indemnification provisions in this Lease. Such insurance shall be for such
limits that are reasonably required by Landlord from time to time but not less
than a combined single limit of Three Million and No/100 Dollars
($3,000,000.00); (b) Workers' Compensation and Employers' Liability Insurance
for an amount of not less than One Million and No/100 Dollars ($1,000,000.00),
both in accordance with the laws of The State of Illinois; (c) "All Risks"
property insurance in an amount adequate to cover the full replacement cost of
all equipment, installations, fixtures and contents of the Premises, including
the Bridge and the Antennae Siote as set forth in Exhibit I attached to this
Lease, in the event of loss and any such policy shall contain a provision
requiring the insurance carriers to waive their rights of subrogation against
Landlord. For the purposes of this Article Sixteen, the Premises will include
the Bridge or any bridge constructed by Tenant adjoining the Premises and the
Antennae Site, if the Satellite License Agreement is entered into. So long as
the Bridge or any such bridge is in place, the limit of comprehensive
generalliability insurance shall not be less than $10,000,000; (d) In the event
a motor vehicle is to be used by Tenant in connection with its business
operation from the Premises, Comprehensive Automobile Liability Insurance
coverage with limits of not less than One Million and No/100 Dollars
($1,000,000.00) combined single limit coverage against bodily injury

                                       34


liability and property damage liability arising out of the use by or on behalf
of Tenant, its agents and employees in connection with this Lease, of any owned,
non-owned or hired motor vehicles; and (e) such other insurance or coverages as
Landlord reasonably requires.

16.02  FORM OF POLICIES

Each policy referred to in 16.01 shall satisfy the following requirements. Each
policy shall (i) name Landlord and the Indemnitees as additional insureds
(except Workers' Compensation and Employers' Liability Insurance), (ii) be
issued by one or more responsible insurance companies licensed to do business in
the state of Illinois and reasonably satisfactory to Landlord, (iii) where
applicable, provide for deductible amounts satisfactory to Landlord and not
permit co-insurance, (iv) shall provide that such insurance may not be canceled
or amended without thirty (30) days' prior written notice to the Landlord, and
(v) shall provide that the policy shall not be invalidated should the insured
waive in writing prior to a loss, any or all rights of recovery against any
other party for losses covered by such policies. Tenant shall deliver to
Landlord, certificates of insurance and at Landlord's request, copies of all
policies and renewals thereof to be maintained by Tenant hereunder, not less
than ten (10) days prior to the Commencement Date and not less than ten (10)
days prior to the expiration date of each policy.

16.03  LANDLORD'S INSURANCE

Landlord agrees to purchase and keep in full force and effect during the Term
hereof, including any extensions or renewals thereof, insurance under policies
issued by insurers of recognized responsibility, qualified to do business in
Illinois on the Building in amounts not less than the greater of eighty (80%)
percent of the then full replacement cost (without depreciation) of the Building
(above foundations) or an amount sufficient to prevent Landlord from becoming a
co-insurer under the terms of the applicable policies, against fire and such
other risks as may be included in standard forms of all risk coverage insurance
reasonably available from time to time. Landlord agrees to maintain in force
during the Term, Commercial General Liability Insurance covering the Building on
an occurrence basis against all claims for personal injury, bodily injury, death
and property damage. Such insurance shall be for a combined single limit of Five
Million and No/100 Dollars ($5,000,000.00). Neither Landlord's obligation to
carry such insurance nor the carrying of such insurance shall be deemed to be an
indemnity by Landlord with respect to any claim, liability, loss, cost or
expense due, in whole or in part, to Tenant's negligent acts or omissions or
willful misconduct.

16.04  WAIVER OF SUBROGATION

     (a)  Landlord agrees that, if obtainable at no, or minimal, additional
cost, and so long as the same is permitted under the laws of the State of
Illinois, it will include in its "All Risks" policies appropriate clauses
pursuant to which the insurance companies (i) waive all right of subrogation
against Tenant with respect to losses payable under such policies and/or (ii)
agree that such policies shall not be invalidated should the insured waive in
writing prior to a loss any or all right of recovery against any party for
losses covered by such policies.

                                       35


     (b)  Tenant agrees to include, if obtainable at no, or minimal, additional
cost, and so long as the same is permitted under the laws of the State of
Illinois, in its "All Risks" insurance policy or policies on its furniture,
furnishings, fixtures and other property removable by Tenant under the
provisions of this Lease appropriate clauses pursuant to which the insurance
company or companies (i) waive the right of subrogation against Landlord and/or
any tenant of space in the Building with respect to losses payable under such
policy or policies and/or (ii) agree that such policy or policies shall not be
invalidated should the insured waive in writing prior to a loss any or all right
of recovery against any party for losses covered by such policy or policies. If
Tenant is unable to obtain in such policy or policies either of the clauses
described in the preceding sentence, Tenant shall, if legally possible and
without necessitating a change in insurance carriers, have Landlord named in
such policy or policies as an additional insured. If Landlord shall be named as
an additional insured in accordance with the foregoing, Landlord agrees to
endorse promptly to the order of Tenant, without recourse, any check, draft, or
order for the payment of money representing the proceeds of any such policy or
representing any other payment growing out of or connected with said policies,
and Landlord does hereby irrevocably waive any and all rights in and to such
proceeds and payments.

     (c)  Provided that Landlord's right of full recovery under its policy or
policies aforesaid is not adversely affected or prejudiced thereby, Landlord
hereby waives any and all right of recovery which it might otherwise have
against Tenant, its servants, agents and employees, for loss or damage occurring
to the Building and the fixtures, appurtenances and equipment therein, to the
extent the same is covered by Landlord's insurance, notwithstanding that such
loss or damage may result from the negligence or fault of Tenant, its servants,
agents or employees. Provided that Tenant's right of full recovery under its
aforesaid policy or policies is not adversely affected or prejudiced thereby,
Tenant hereby waives any and all right of recovery which it might otherwise have
against Landlord, its servants, and employees and against every other tenant in
the Building who shall have executed a similar waiver as set forth in this
Section 16.04 (c) for loss or damage to Tenant's furniture, furnishings,
fixtures and other property removable by Tenant under the provisions hereof to
the extent that same is covered or coverable by Tenant's insurance required
under this Lease, notwithstanding that such loss or damage may result from the
negligence or fault of Landlord, its servants, agents or employees, or such
other tenant and the servants, agents or employees thereof.

     (d)  Landlord and Tenant hereby agree to advise the other promptly if the
clauses to be included in their respective insurance policies pursuant to
subparagraphs (a) and (b) above cannot be obtained on the terms hereinbefore
provided and thereafter to furnish the other with a certificate of insurance or
copy of such policies showing the naming of the other as an additional insured,
as aforesaid. Landlord and Tenant hereby also agree to notify the other promptly
of any cancellation or change of the terms of any such policy which would affect
such clauses or naming. All such policies which name both Landlord and Tenant as
additional insureds shall, to the extent obtainable, contain agreements by the
insurers to the effect that no act or omission of any additional insured will
invalidate the policy as to the other additional insureds.

                                       36


16.05  NOTICE OF CASUALTY

Tenant shall give Landlord notice in case of a fire or accident in the Premises
promptly after Tenant is aware of such event.

16.06  SELF INSURANCE

Notwithstanding the foregoing, upon approval by Landlord as hereinafter
provided, Tenant may elect to effect the foregoing insurance coverage, with
respect to casualty losses only, through a plan of self insurance. If Tenant
desires to effect any of the foregoing insurance coverage through a plan of self
insurance or any amendment to a plan of self insurance theretofore approved by
Landlord, Tenant shall deliver to Landlord a written notice of Tenant's desire
to self insure, which notice shall specify the risks and amounts Tenant desires
to self insure. Such notice shall be accompanied by audited financial statements
of Tenant and such other financial and other supporting documentation as
Landlord may reasonably require. Landlord shall approve or disapprove of such
plan of self insurance or proposed amendment thereto within thirty (30) days
after receipt of Tenant's notice and all financial and other supporting
documentation required hereby. Such approval shall not be arbitrarily withheld.
If Landlord approves such plan of self insurance and for so long as Tenant is
self insured, Tenant shall deliver to Landlord annual audited financial
statements and such other updated and supplemental information as Landlord may
reasonably require as a condition to the continuance of such plan of self
insurance. Landlord may at any time disapprove continuance of the plan of self
insurance, provided such disapproval is not arbitrary, in which event Tenant
shall promptly provide insurance coverage as required under Section 16.01 hereof
and such self insurance shall remain in effect until Tenant provides such
insurance. The rights contained in this Section 16.06 are personal to Tenant and
its Affiliates and shall not and may not be exercised by or for the benefit of
any other party.

     In the event Tenant elects to so self insure, Tenant agrees to indemnify,
protect, defend and hold the Indemnitees harmless against any and all actions,
claims, demands, costs and expenses, including reasonable attorney's fees and
expenses for defense thereof, arising from any circumstances that would
otherwise be covered by insurance if Tenant was carrying the types and amounts
of insurance required of Tenant under this Article Sixteen. In case of any
action or proceeding brought against the Indemnitees by reason of any such
claim, upon notice from Landlord, Tenant covenants to defend such action or
proceeding by counsel reasonably satisfactory to Landlord.

                               ARTICLE SEVENTEEN
                             INTENTIONALLY OMITTED

                                       37


                               ARTICLE EIGHTEEN
                             RULES AND REGULATIONS

18.01  RULES

Tenant agrees for itself and for its subtenants, employees, agents, and invitees
to comply with the rules and regulations listed on Exhibit C attached hereto and
                                                   ---------
with all reasonable modifications and additions thereto which Landlord may make
from time to time.  In the event of any conflict between the rules and
regulations set forth on Exhibit C and the other provisions of this Lease, the
                         ---------
provisions of this Lease shall control.

18.02  ENFORCEMENT

Nothing in this Lease shall be construed to impose upon the Landlord any duty or
obligation to enforce the rules and regulations as set forth on Exhibit C or as
                                                                ---------
hereafter adopted, or the terms, covenants or conditions of any other lease as
against any other tenant, and the Landlord shall not be liable to the Tenant for
violation of the same by any other tenant, its servants, employees, agents,
visitors or licensees.  Landlord shall use reasonable efforts to enforce the
rules and regulations of the Building in a uniform and non-discriminatory
manner.  Tenant shall pay to Landlord all damages caused by Tenant's failure to
comply with the provisions of this Article Eighteen and shall also pay to
Landlord as additional Rent an amount equal to any increase in insurance
premiums directly attributable to such failure to comply.


                               ARTICLE NINETEEN
                          LANDLORD'S RESERVED RIGHTS

Landlord shall have the following rights exercisable without notice to Tenant
and without liability to Tenant for damage or injury to persons, property or
business and without being deemed an eviction or disturbance of Tenant's use or
possession of the Premises or giving rise to any claim for offset or abatement
of Rent: (1) to change the Building's name or street address upon thirty (30)
days' prior written notice to Tenant; (2) to install, affix and maintain all
signs on the exterior and/or interior of the Building, subject to Tenant's
rights as set forth in Article Thirty-Two hereof; (3) to designate and/or
approve prior to installation, all types of signs, window shades, blinds,
drapes, awnings or other similar items, and all internal lighting that may be
visible from the exterior of the Premises; (4) upon reasonable notice to Tenant
and in accordance with the provisions of Section 7.02 of this Lease, to display
the Premises to prospective purchasers at reasonable hours at any time during
the Term and to prospective tenants at reasonable hours during the last twelve
(12) months of the Term; (5) to grant to any party the exclusive right to
conduct any business or render any service (except as provided in Article Six of
this Lease) in or to the Building, provided such exclusive right shall not
operate to prohibit Tenant from using the Premises for the purpose permitted
hereunder; (6) to change the arrangement and/or location of entrances or
passageways, doors and doorways, corridors, elevators, stairs, washrooms or
public portions of the Building, and to close entrances, doors, corridors,
elevators or other facilities, provided that such action shall not materially
and adversely interfere with Tenant's access to the Premises or the Building;
(7) to have access for Landlord and other tenants of the Building to any mail
chutes and boxes located in or on the Premises as required by any applicable
rules of the United States Post Office; and (8) to close

                                       38


the Building after Standard Operating Hours, except that Tenant and its
employees and invitees shall be entitled to admission to the Building and the
Premises 24 hours per day, 7 days per week, under such regulations as Landlord
prescribes for security purposes.

                                ARTICLE TWENTY
                             ESTOPPEL CERTIFICATE

20.01  IN GENERAL

Within fifteen (15) days after request therefor by Landlord, Mortgagee or any
prospective mortgagee or owner, Tenant agrees as directed in such request to
execute an Estoppel Certificate in recordable form, binding upon Tenant,
certifying (i) that this Lease is unmodified and in full force and effect (or if
there have been modifications, a description of such modifications and that this
Lease as modified is in full force and effect); (ii) the dates to which Rent has
been paid; (iii) that Tenant is in the possession of the Premises if that is the
case; (iv) that, to Tenant's knowledge, Landlord is not in default under this
Lease, or, if Tenant believes Landlord is in default, the nature thereof in
detail; (v) that, to Tenant's knowledge, Tenant has no off-sets or defenses to
the performance of its obligations under this Lease (except as set forth in the
Lease)(or if Tenant believes there are any off-sets or defenses (other than as
set forth in the Lease), a full and complete explanation thereof); (vi) that the
Premises have been completed in accordance with the terms and provisions hereof
or the Workletter, that Tenant has accepted the Premises and the condition
thereof and of all improvements thereto and, to Tenant's knowledge, Tenant has
no claims against Landlord or any other party with respect thereto (or if any
items are not completed or if Tenant has not accepted possession or has claims,
an explanation of the same); (vii) that if an assignment of rents or leases has
been served upon the Tenant by a Mortgagee, Tenant will acknowledge receipt
thereof and agree to be bound by the provisions thereof; (viii) that Tenant will
give to the Mortgagee copies of all notices required or permitted to be given by
Tenant to Landlord; and (ix) to any other information reasonably requested
related to the status of the Lease.

20.02  ENFORCEMENT

In the event that Tenant fails to deliver an Estoppel Certificate, then such
failure shall be a Default for which there shall be no cure or grace period.
Further, if Tenant so fails to deliver the Estoppel Certificate, Landlord and
any lender, prospective lender, investor, or purchaser may conclusively presume
and rely, except as otherwise represented by Landlord, (i) that the terms and
provisions of this Lease have not been changed; (ii) that this Lease has not
been cancelled or terminated; (iii) that not more than one month's Rent has been
paid in advance; and (iv) that Landlord is not in default in the performance of
any of its obligations under this Lease. In such event, Tenant is estopped from
denying the truth of such facts.

                              ARTICLE TWENTY-ONE
                             INTENTIONALLY OMITTED

                                       39


                              ARTICLE TWENTY-TWO
                              REAL ESTATE BROKERS

Landlord and Tenant each hereby represent to the other that, except for CB
Richard Ellis and Staubach Midwest LLC (the "Brokers"), neither party has dealt
with any real estate broker, sales person, or finder in connection with this
Lease, and no such person initiated or participated in the negotiation of this
Lease, or showed the Premises to Tenant. Tenant hereby agrees to indemnify,
protect, defend and hold Landlord and the Indemnitees, harmless from and against
any and all liabilities and claims for commissions and fees arising out of a
breach of the foregoing representation and Landlord hereby agrees to indemnify,
protect, defend and hold Tenant harmless from and against any and all
liabilities and claims for commissions and fees made by the Brokers arising out
of a breach of the foregoing representation. Landlord shall be responsible for
the payment of all commissions to the Brokers specified in this Article.

                             ARTICLE TWENTY-THREE
                             MORTGAGEE PROTECTION

23.01  SUBORDINATION AND ATTORNMENT

This Lease is and shall be expressly subject and subordinate at all times to (i)
any ground or underlying lease of the Real Property, now or hereafter existing,
and all amendments, extensions, renewals and modifications to any such lease,
and (ii) the lien of any first mortgage or trust deed now or hereafter
encumbering fee title to the Real Property and/or the leasehold estate under any
such lease, and all amendments, extensions, renewals, replacements and
modifications of such mortgage or trust deed and/or the obligation secured
thereby, unless such ground lease or ground lessor, or mortgage, trust deed or
Mortgagee, expressly provides or elects that the Lease shall be superior to such
lease or mortgage or trust deed, it being understood that currently there is no
mortgage, ground lease or trust deed encumbering the Real Property. If any such
mortgage or trust deed is foreclosed (including any sale of the Real Property
pursuant to a power of sale), or if any such lease is terminated, upon request
of the Mortgagee or ground lessor, as the case may be, Tenant shall attorn to
the purchaser at the foreclosure sale or to the ground lessor under such lease,
as the case may be, provided that such successor agrees not to disturb Tenant in
its use and quiet enjoyment of the Premises so long as Tenant (i) is not in
Default under the Lease, and (ii) Tenant and/or an Affiliate occupies no less
than 79,097 rentable square feet in the Building; and further provided that such
successor shall not be (1) bound by any payment of Rent for more than one month
in advance except payments in the nature of security for the performance by
Tenant of its obligations under this Lease; or (2) subject to any offsets,
defenses or damages arising out of a default of any obligations of any preceding
Landlord, except those which are continuing as of the date such purchaser
succeeds to Landlord's interest; or (3) bound by any amendment or modification
of this Lease made without the written consent of the Mortgagee or ground lessor
to the extent such consent is required by the terms of the mortgage, trust deed
or ground lease and excluding the exercise of any options or elections contained
in the Lease, including without limitation, options to renew the term, expand
the Premises, rights of first offer, termination and contraction; or (4) liable
for any security deposits not actually received in cash by such purchaser or
ground lessor. This subordination shall be self-operative and no further
certificate or instrument of subordination need be required by any such
Mortgagee or ground lessor. In

                                       40


confirmation of such subordination, however, Tenant shall execute any reasonable
certificate or instrument that Landlord, Mortgagee or ground lessor may request,
so long as such instrument contains a non-disturbance provision reasonably
acceptable to Tenant, within twenty (20) days of a request to do so. If Tenant
fails to deliver such certificate or instrument within said twenty-(20) day
period, such failure shall be a Default hereunder.

23.02  MORTGAGEE PROTECTION

Tenant agrees to give any Mortgagee or ground lessor, concurrently, by
registered or certified mail, a copy of any notice of default served upon the
Landlord by Tenant, provided that prior to such notice Tenant has received
written notice (by way of service on Tenant of a copy of an assignment of rents
and leases, or otherwise) of the address of such Mortgagee or ground lessor.
Tenant further agrees that if Landlord shall have failed to cure such default
within the time provided for in this Lease, then the Mortgagee or ground lessor
shall have an additional thirty (30) days after receipt of notice thereof within
which to cure such default or if such default cannot be cured within that time,
then if the Mortgagee or ground lessor agrees to cure such default, then the
Mortgagee or ground lessor shall have such additional time as may be necessary,
if, within such thirty (30) days, any Mortgagee or ground lessor has commenced
and is diligently pursuing the remedies necessary to cure such default, but in
no event shall said thirty (30) day period be extended by more than forty-five
(45) days. Such period of time shall be extended by any period within which such
Mortgagee or ground lessor is prevented from commencing or pursuing such
foreclosure proceedings or other proceedings to acquire possession of the Real
Property by reason of Landlord's bankruptcy. Until the time allowed as aforesaid
for Mortgagee or ground lessor to cure such defaults has expired without cure,
Tenant shall have no right to, and shall not, terminate this Lease on account of
default. This Lease may not be modified or amended so as to reduce the rent or
shorten the term, or so as to adversely affect in any other respect to any
material extent the rights of the Landlord, nor shall this Lease be canceled or
surrendered, without the prior written consent, in each instance, of the ground
lessor or the Mortgagee.

                              ARTICLE TWENTY-FOUR
                                    NOTICES

     (a)  All notices, demands or requests provided for or permitted to be given
pursuant to this Lease must be in writing and shall be personally delivered,
sent by Federal Express or other overnight courier service, or mailed by first
class, registered or certified mail, return receipt requested, postage prepaid.

     (b)  All notices, demands or requests to be sent pursuant to this Lease
shall be deemed to have been properly given or served by delivering or sending
the same in accordance with this Section, addressed to the parties hereto at
their respective addresses listed below:

          (1)  Notices to Landlord shall be addressed:

               c/o CB Richard Ellis, Inc.
               10 South LaSalle Street, Suite 1301
               Chicago, Illinois 60603
               Attention:  General Manager

                                       41


          with a copy to the following:

               Metropolitan Life Insurance Company
               2001 Spring Road, Suite 400
               Oak Brook, Illinois 60523
               Attention:  Vice President
               Real Estate Investments

          (2)  Notices to Tenant shall be addressed:

               The Northern Trust Company
               50 South LaSalle Street
               Chicago, Illinois 60675
               Attention:  Vice President Corporate Real Estate

          with a copy to the following:

               The Northern Trust Company
               20 South LaSalle Street
               Chicago, Illinois 60675
               Attention:  General Counsel

     (c)  If notices, demands or requests are sent by registered or certified
mail, said notices, demands or requests shall be effective upon being deposited
in the United States mail. However, the time period in which a response to any
such notice, demand or request must be given shall commence to run from the date
of receipt on the return receipt of the notice, demand or request by the
addressee thereof. Rejection or other refusal to accept or the inability to
deliver because of changed address of which no notice was given shall be deemed
to be receipt of notice, demand or request sent.

     Notices may also be served by personal service upon any officer, director
or partner of Landlord or Tenant or in the case of delivery by Federal Express
or other overnight courier service, notices shall be effective upon acceptance
of delivery by an employee, officer, director or partner of Landlord or Tenant.

     (d)  By giving to the other party at least thirty (30) days written notice
thereof, either party shall have the right from time to time during the term of
this Lease to change their respective addresses for notices, statements, demands
and requests, provided such new address shall be within the United States of
America.

                              ARTICLE TWENTY-FIVE
                                RENEWAL OPTIONS


     (a)  Tenant shall have and is hereby granted an option (the "First Renewal
Option") to extend the term of this Lease from January 1, 2016 to December 31,
2020 (the "First Renewal Term"), on all the terms, covenants and conditions of
this Lease, except that the rental shall be as

                                       42


set forth below. To exercise the First Renewal Option, Tenant shall notify
Landlord in writing not later than June 30, 2014 ("Tenant's First Notice"). If
Tenant exercises the First Renewal Option, then the word "Term" as used in this
Lease shall be deemed to include the First Renewal Term.

     (b)  The Monthly Base Rent during the First Renewal Term shall be equal to
the Market Rate (as defined in Section 25(s) hereof) multiplied by the Rentable
Area of the Premises.

     (c)  Landlord shall respond to Tenant's First Notice with its determination
of Market Rate within thirty (30) days of receipt of Tenant's First Notice.
Tenant shall have thirty (30) days after receipt of Landlord's determination to
accept, reject or submit for arbitration (as outlined in Article Twenty-Six
below). If Tenant elects to submit to arbitration, Tenant shall name its
arbitrator in its notice to Landlord that it has selected arbitration.

     (d)  It shall be a condition to Tenant's exercise of the First Renewal
Option that both at the time of delivery of Tenant's First Notice and at the
commencement of the First Renewal Term: (i) Tenant is not in Default under this
Lease, and (ii) except as may be permitted below, Tenant and/or an Affiliate is
occupying the Premises for the conduct of business. Any termination of this
Lease or termination of Tenant's right of possession shall terminate all of
Tenant's rights to the First Renewal Option. Except as set forth below, the
First Renewal Option may be exercised only by and is personal to Tenant and/or
an Affiliate and may not be exercised by or for the benefit of any other party.

     Notwithstanding anything to the contrary contained in this Lease, Tenant's
rights to exercise the First Renewal Option shall not be affected by any
sublease of the Premises entered into pursuant to the terms of this Lease, but
in no event shall any sublessee have any rights to exercise said First Renewal
Option. In addition, the right to exercise the First Renewal Option shall be
automatically transferred to (i) an Assignee who leases the entire Premises
pursuant to the terms of this Lease or (ii) to any Assignee pursuant to an
Assignment of this Lease for more than 25% of Tenant's then leased space in the
Building, but shall not be transferred to any Assignee pursuant to an Assignment
of this Lease for less than 25% of Tenant's then leased space in the Building.

     (e)  Landlord shall have no obligation to make improvements, decorations,
repairs, alterations or additions to the Premises as a condition to Tenant's
obligations to pay Rent for the First Renewal Term except as may be determined
as part of Market Rate.

     (f)  In the event that Tenant exercises the First Renewal Option, Tenant
agrees to enter into an amendment to this Lease reasonably acceptable to Tenant
incorporating the First Renewal Term and Monthly Base Rent applicable to such
option the earlier of (i) sixty (60) days following the exercise of the First
Renewal Option or (ii) thirty (30) days following the delivery of the
arbitrator's decision to the parties pursuant to the terms of Article Twenty-Six
of this Lease.

     (g)  Tenant shall also have and is hereby granted a second option (the
"Second Renewal Option") to extend the term of this Lease from January 1, 2021
to December 31, 2025 (the "Second Renewal Term"), on all the terms, covenants
and conditions of this Lease, except that the rental shall be as set forth
below. To exercise the Second Renewal Option, Tenant shall notify Landlord

                                       43


in writing not later than June 30, 2019 ("Tenant's Second Notice"). If Tenant
exercises the Second Renewal Option, then the word "Term" as used in this Lease
shall be deemed to include the Second Renewal Term.

     (h)  The Monthly Base Rent during the Second Renewal Term shall be equal to
the Market Rate (as defined in Section 25(s) hereof) multiplied by the Rentable
Area of the Premises.

     (i)  Landlord shall respond to Tenant's Second Notice with its
determination of Market Rate within thirty (30) days of receipt of said Notice.
Tenant shall have thirty (30) days after receipt of Landlord's determination to
accept, reject or submit for arbitration (as outlined in Article Twenty-Six
below). If Tenant elects to submit to arbitration, Tenant shall name its
arbitrator in its notice to Landlord that it has selected arbitration.

     (j)  It shall be a condition to Tenant's exercise of the Second Renewal
Option that both at the time of delivery of Tenant's Second Notice and at the
commencement of the Second Renewal Term: (i) Tenant is not in Default under this
Lease, and (ii) except as may be permitted below, Tenant and/or an Affiliate is
occupying the Premises for the conduct of business. Any termination of this
Lease or termination of Tenant's right of possession shall terminate all of
Tenant's rights to the Second Renewal Option. Except as set forth below, the
Second Renewal Option may be exercised only by and is personal to Tenant and/or
an Affiliate and may not be exercised by or for the benefit of any other party.

     Notwithstanding anything to the contrary contained in this Lease, Tenant's
rights to exercise the Second Renewal Option shall not be affected by any
sublease of the Premises entered into pursuant to the terms of this Lease, but
in no event shall any sublessee have any rights to exercise said Second Renewal
Option. In addition, the right to exercise the Second Renewal Option shall be
automatically transferred to (i) an Assignee who leases the entire Premises
pursuant to the terms of this Lease or (ii) to any Assignee pursuant to an
Assignment of this Lease for more than 25% of Tenant's then leased space in the
Building, but shall not be transferred to any Assignee pursuant to an Assignment
of this Lease for less than 25% of Tenant's then leased space in the Building.

     (k)  Landlord shall have no obligation to make improvements, decorations,
repairs, alterations or additions to the Premises as a condition to Tenant's
obligations to pay Rent for the Second Renewal Term except as may be determined
as part of Market Rate.

     (l)  In the event that Tenant exercises the Second Renewal Option, Tenant
agrees to enter into an amendment to this Lease reasonably acceptable to Tenant
incorporating the Second Renewal Term and Monthly Base Rent applicable to such
option (i) sixty (60) days following the exercise of the Second Renewal Option
or (ii) thirty (30) days following the delivery of the arbitrator's decision to
the parties pursuant to the terms of Article Twenty-Six of this Lease.

     (m)  Tenant shall also have and is hereby granted a third option (the
"Third Renewal Option") to extend the term of this Lease from January 1, 2026 to
December 31, 2030 (the "Third Renewal Term"), on all the terms, covenants and
conditions of this Lease, except that the rental shall be as set forth below,
and no additional renewal rights are granted Tenant beyond the Third

                                       44


Renewal Term. To exercise the Third Renewal Option, Tenant shall notify Landlord
in writing not later than June 30, 2024 ("Tenant's Third Notice"). If Tenant
exercises the Third Renewal Option, then the word "Term" as used in this Lease
shall be deemed to include the Third Renewal Term.

     (n)  The Monthly Base Rent during the Third Renewal Term shall be equal to
the Market Rate (as defined in Section 25(s) hereof) multiplied by the Rentable
Area of the Premises.

     (o)  Landlord shall respond to Tenant's Third Notice with its determination
of Market Rate within thirty (30) days of receipt of said Notice.  Tenant shall
have thirty (30) days after receipt of Landlord's determination to accept,
reject or submit for arbitration (as outlined in Article Twenty-Six below).  If
Tenant elects to submit to arbitration, Tenant shall name its arbitrator in its
notice to Landlord that it has selected arbitration.

     (p)  It shall be a condition to Tenant's exercise of the Third Renewal
Option that both at the time of delivery of Tenant's Third Notice and at the
commencement of the Third Renewal Term: (i) Tenant is not in Default under this
Lease, and (ii) except as may be permitted below, Tenant and/or an Affiliate is
occupying the Premises for the conduct of business.  Any termination of this
Lease or termination of Tenant's right of possession shall terminate all of
Tenant's rights to the Third Renewal Option.  Except as set forth below, the
Third Renewal Option may be exercised only by and is personal to Tenant and/or
an Affiliate and may not be exercised by or for the benefit of any other party.

     Notwithstanding anything to the contrary contained in this Lease, Tenant's
rights to exercise the Third Renewal Option shall not be affected by any
sublease of the Premises entered into pursuant to the terms of this Lease, but
in no event shall any sublessee have any rights to exercise said Third Renewal
Option.  In addition, the right to exercise the Third Renewal Option shall be
automatically transferred to (i) an Assignee who leases the entire Premises
pursuant to the terms of this Lease or (ii) to any Assignee pursuant to an
Assignment of this Lease for more than 25% of Tenant's then leased space in the
Building, but shall not be transferred to any Assignee pursuant to an Assignment
of this Lease for less than 25% of Tenant's then leased space in the Building.

     (q)  Landlord shall have no obligation to make improvements, decorations,
repairs, alterations or additions to the Premises as a condition to Tenant's
obligations to pay Rent for the Third Renewal Term except as may be determined
as part of Market Rate.

     (r)  In the event that Tenant exercises the Third Renewal Option, Tenant
agrees to enter into an amendment to this Lease reasonably acceptable to Tenant
incorporating the Third Renewal Term and Monthly Base Rent applicable to such
option within (i) sixty (60) days following the exercise of the Third Renewal
Option or (ii) thirty (30) days following the delivery of the arbitrator's
decision to the parties pursuant to the terms of Article Twenty-Six of this
Lease.

     (s)  The "Market Rate" shall mean a base net rent annual amount per
rentable square foot and other rental charges for the lease term equivalent to
the period for which the Market Rate is being determined beginning the first
(1/st/) day of the subject period that a willing, credit-worthy non-equity
tenant renewing space comparable to the Premises would pay and a willing
Landlord of an

                                       45


office building comparable to the Building in the Chicago West/Central Loop
office market (the "Market") would accept at arms length. Appropriate
consideration will be given to base net rent, rent escalations, tenant
concessions (e.g. free rent, tenant improvements and other cash allowances),
length of term, size and location of the premises being leased, tenant
improvement allowances, brokerage commissions and other generally applicable
terms and conditions prevailing for comparable space in comparable buildings
located in the Market, as evidenced by then recently completed renewals within
the Market.

                              ARTICLE TWENTY-SIX
                                  ARBITRATION

     (a)  If Tenant has elected to arbitrate in accordance with Article Twenty-
Five above or Articles Twenty-Seven, Twenty-Eight or Twenty-Nine below, then
Landlord shall have thirty (30) days to select its arbitrator. The arbitrator
selected by each of Landlord and Tenant shall, by profession, be a real estate
appraiser (with the professional designation of M.A.I. or, if M.A.I. ceases to
exist, a comparable designation from an equivalent professional appraisal
organization) who shall have been active over the five (5) year period ending on
the date of such appointment in appraisal of commercial properties in the
Chicago downtown business area. The determination of the arbitrators shall be
limited solely to the issue of whether Landlord's or Tenant's submitted Market
Rate for the Premises is the closest to the Market Rate for the Premises as
determined by the arbitrators, taking into account all relevant elements.

     (b)  The two arbitrators so appointed shall, within ten (10) days of the
date of the appointment of the last appointed arbitrator, agree upon and appoint
a third arbitrator who shall be qualified under the same criteria set forth
hereinabove for qualification of the initial two arbitrators.

     (c)  The three arbitrators shall, within thirty (30) days of the
appointment of the third arbitrator, reach a decision as to whether the parties
shall use Landlord's or Tenant's submitted Market Rate, and shall notify
Landlord and Tenant thereof in writing.

     (d)  The decision of the majority of the three arbitrators shall be binding
upon Landlord and Tenant and judgment upon such decision may be entered in by
any court having jurisdiction over Landlord and Tenant.

     (e)  If the two arbitrators fail to agree upon and appoint a third
arbitrator, both arbitrators shall be dismissed and Landlord and Tenant each
shall promptly select and appoint one new arbitrator each possessing the
qualifications described in clause (a) of this Article Twenty-Six. Such new
arbitrators shall promptly follow the procedure outlined in clauses (b) and (c)
of this Article Twenty-Six.

     (f)  The cost of arbitration shall be paid by Landlord if Tenant's
submitted Market Rate is selected and by Tenant if Landlord's submitted Market
Rate is selected.

     (g)  Notwithstanding the foregoing, if either Landlord or Tenant fails to
appoint an arbitrator within the time periods provided for herein and such
failure to appoint an arbitrator is not cured within ten (10) days after receipt
by such failing party of written demand to do so by the other

                                       46


party (which other party shall have appointed its arbitrator prior to sending
such written demand), then the arbitrator appointed by the party sending such
demand, acting alone, shall reach a decision on the applicable Market Rate,
notify Landlord and Tenant in writing thereof, and such arbitrator's decision
shall be binding on Landlord and Tenant.

                             ARTICLE TWENTY-SEVEN
                               EXPANSION OPTIONS

     (a)  Tenant shall have the right to lease additional space with a lease
commencement date of September 1, 2001 (the "2001 Expansion Option") consisting
of 20,722 rentable square feet of space located in the "Low Rise" (floors 3 -
13) portion of the Building (the "2001 Expansion Space") on the terms and
conditions set forth herein. Landlord shall give Tenant notice upon full
execution of this Lease (the "2001 Landlord's Notice Date") with respect to the
space available, including detailed existing condition plans, if available. To
exercise the 2001 Expansion Option, Tenant shall notify Landlord in writing
("Tenant's 2001 Expansion Notice") on or before January 1, 2001.  Tenant's
possession date (the "2001 Possession Date") shall be June 1, 2001.  The 2001
Expansion Space shall be delivered to Tenant on the 2001 Possession Date in its
then current, AS IS condition, except with respect to the conditions set forth
in Exhibit F - Base Building Conditions, and Landlord has no obligation to make
   ---------
any improvement to the 2001 Expansion Space, provided however, that Landlord
shall contribute an amount (the "2001Contribution") equal to Five Hundred
Ninety-Four Thousand Ninety-Nine and 74/100 Dollars ($594,099.74)(based on
$28.67 per rentable square foot) to be applied to Tenant's completion of such
improvements and additions to the 2001 Expansion Space as Tenant deems desirable
including all construction improvements, architectural and engineering fees,
third party construction consultants, FF&E expenses, or teledata related costs
(the "2001 Work").  Tenant shall complete the 2001 Work in accordance with the
terms of this Lease, including, without limitation, Exhibit B. If the costs of
                                                    ---------
completing the 2001 Work exceeds the sum of  the 2001 Contribution, Tenant shall
pay all such costs. In the event that Tenant fails to use all of the 2001
Contribution as set forth above within the first twelve (12) months after the
2001 Possession Date, then the portion of the 2001 Contribution which is not
disbursed as provided above shall be applied against installments of Rent next
due from Tenant.

     (b)  Monthly Base Rent for the 2001 Expansion Space (the "2001 Expansion
Base Rent") shall be equal to the then-escalated Monthly Base Rent rate for the
Premises and shall commence September 1, 2001 (the "2001 Lease Commencement
Date").

     (c)  Tenant shall have the right to lease additional space with a lease
commencement date in 2004 (the "2004 Expansion Option") consisting of between
4,500 and 7,100 rentable square feet of space (as currently determined, but
which square footage amounts may be modified by the provisions of Section 2.04
of this Lease) located in the Low Rise portion of the Building (the "2004
Expansion Space") on the terms and conditions set forth herein. Landlord shall
give Tenant notice between March 1, 2003 and February 28, 2004 (the "2004
Landlord's Notice Date") with respect to the space available, including detailed
existing condition plans, if available. To exercise the 2004 Expansion Option,
Tenant shall notify Landlord in writing ("Tenant's 2004 Expansion Notice")
within thirty (30) days of receipt of the 2004 Landlord's Notice. Tenant's
possession date (the "2004 Possession Date") shall be as stated in the 2004
Landlord's Notice, but in no event shall the

                                       47


2004 Possession Date be earlier than eight (8) months after the date of the 2004
Landlord's Notice. The 2004 Expansion Space shall be delivered to Tenant on the
2004 Possession Date in its then current, AS IS condition, except with respect
to the conditions set forth in Exhibit F - Base Building Conditions, and
                               ---------
Landlord has no obligation to make any improvement to the 2004 Expansion Space,
provided however, that Landlord shall contribute an amount (the "2004
Contribution") equal to of $30.00/rentable square foot, declining on a monthly
basis proportional to time remaining on the term (i.e. If the term for the 2004
Expansion Space is for 12 years, the 2004 Contribution shall be $24.00/rentable
square foot). The 2004 Contribution is to be applied to Tenant's completion of
such improvements and additions to the 2004 Expansion Space as Tenant deems
desirable including all construction improvements, architectural and engineering
fees, third party construction consultants, FF&E expenses, or teledata related
costs (the "2004 Work"). Tenant shall complete the 2004 Work in accordance with
the terms of this Lease, including, without limitation, Exhibit B. If the costs
                                                        ---------
of completing the 2004 Work exceeds the sum of the 2004 Contribution, Tenant
shall pay all such costs. In the event that Tenant fails to use all of the 2004
Contribution as set forth above within the first twelve (12) months after the
2004 Possession Date, then the portion of the 2004 Contribution which is not
disbursed as provided above shall be applied against installments of Rent next
due from Tenant.

     (d)  Monthly Base Rent for the 2004 Expansion Space (the "2004 Expansion
Base Rent") shall be equal to the then-escalated Monthly Base Rent rate for the
Premises and shall commence ninety (90) days after the 2004 Possession Date (the
"2004 Lease Commencement Date").

     (e)  Tenant shall have the right to lease additional space with a lease
commencement date in 2005 (the "2005 Expansion Option") consisting of between
8,500 and 14,900 rentable square feet of space (as currently determined, but
which square footage amounts may be modified by the provisions of Section 2.04
of this Lease) located in the Low Rise portion of the Building (the "2005
Expansion Space") on the terms and conditions set forth herein. Landlord shall
give Tenant notice between March 1, 2004 and February 28, 2005 (the "2005
Landlord's Notice Date") with respect to the space available, including detailed
existing condition plans, if available. To exercise the 2005 Expansion Option,
Tenant shall notify Landlord in writing ("Tenant's 2005 Expansion Notice")
within thirty (30) days of receipt of the 2005 Landlord's Notice.  Tenant's
possession date (the "2005 Possession Date") shall be as stated in the 2005
Landlord's Notice, but in no event shall the 2005 Possession Date be earlier
than eight (8) months after the date of the 2005 Landlord's Notice.  The 2005
Expansion Space shall be delivered to Tenant on the 2005 Possession Date in its
then current, AS IS condition, except with respect to the conditions set forth
in Exhibit F - Base Building Conditions, and Landlord has no obligation to make
   ---------
any improvement to the 2005 Expansion Space, provided however, that Landlord
shall contribute an amount (the "2005 Contribution") equal to of $30.00/rentable
square foot, declining on a monthly basis proportional to time remaining on the
term (i.e. If the term for the 2005 Expansion Space is for 10 years, the 2005
Contribution shall be $20.00/rentable square foot). The 2005 Contribution is to
be applied to Tenant's completion of such improvements and additions to the 2005
Expansion Space as Tenant deems desirable including all construction
improvements, architectural and engineering fees, third party construction
consultants, FF&E expenses, or teledata related costs (the "2005 Work").  Tenant
shall complete the 2005 Work in accordance with the terms of this Lease,
including, without limitation, Exhibit B. If the costs of completing the 2005
                               ---------
Work exceeds the sum

                                       48


of the 2005 Contribution, Tenant shall pay all such costs. In the event that
Tenant fails to use all of the 2005 Contribution as set forth above within the
first twelve (12) months after the 2005 Possession Date, then the portion of the
2005 Contribution which is not disbursed as provided above shall be applied
against installments of Rent next due from Tenant.

     (f)  Monthly Base Rent for the 2005 Expansion Space (the "2005 Expansion
Base Rent") shall be equal to the then-escalated Monthly Base Rent rate for the
Premises and shall commence ninety (90) days after the 2005 Possession Date (the
"2005 Lease Commencement Date").

     (g)  Tenant shall have the right to lease additional space with a lease
commencement date in 2007 (the "2007 Expansion Option") consisting of between
10,000 and 23,000 rentable square feet of space (as currently determined, but
which square footage amounts may be modified by the provisions of Section 2.04
of this Lease) located in the Low Rise portion of the Building (the "2007
Expansion Space") on the terms and conditions set forth herein. Landlord shall
give Tenant notice between March 1, 2006 and February 28, 2007 (the "2007
Landlord's Notice Date") with respect to the space available, including detailed
existing condition plans, if available. To exercise the 2007 Expansion Option,
Tenant shall notify Landlord in writing ("Tenant's 2007 Expansion Notice")
within thirty (30) days of receipt of the 2007 Landlord's Notice.  Tenant's
possession date (the "2007 Possession Date") shall be as stated in the 2007
Landlord's Notice, but in no event shall the 2007 Possession Date be earlier
than eight (8) months after the date of the 2007 Landlord's Notice.  The 2007
Expansion Space shall be delivered to Tenant on the 2007 Possession Date in its
then current, AS IS condition, except with respect to the conditions set forth
in Exhibit F - Base Building Conditions, and Landlord has no obligation to make
   ---------
any improvement to the 2007 Expansion Space, provided however, that Landlord may
contribute an amount (the "2007 Contribution") as determined in accordance with
the provisions of Section 25(s). The 2007 Contribution, if any, is to be applied
to Tenant's completion of such improvements and additions to the 2007 Expansion
Space as Tenant deems desirable including all construction improvements,
architectural and engineering fees, third party construction consultants, FF&E
expenses, or teledata related costs (the "2007 Work").  Tenant shall complete
the 2007 Work in accordance with the terms of this Lease, including, without
limitation, Exhibit B. If the costs of completing the 2007 Work exceeds the sum
            ---------
of  the 2007 Contribution, if any, Tenant shall pay all such costs. In the event
that Tenant fails to use all of the 2007 Contribution, if any, as set forth
above within the first twelve (12) months after the 2007 Possession Date, then
the portion of the 2007 Contribution, if any, which is not disbursed as provided
above shall be applied against installments of Rent next due from Tenant.

     (h)  Monthly Base Rent for the 2007 Expansion Space (the "2007 Expansion
Base Rent") shall be equal to the Market Rate as defined in Section 25(s) above
multiplied by the rentable area of the 2007 Expansion Space and shall commence
ninety (90) days after the 2007 Possession Date (the "2007 Lease Commencement
Date").

     (i)  Landlord shall include in the notice given on the "2007 Landlord's
Notice Date" its determination of Market Rate.  Tenant shall have thirty (30)
days after receipt of Landlord's determination to accept, reject or submit for
arbitration (as outlined in Article Twenty-Six above).

                                       49


If Tenant elects to submit to arbitration, Tenant shall name its arbitrator in
its notice to Landlord that it has selected arbitration.

     (j)  Tenant shall have the right to lease additional space with a lease
commencement date in 2011 (the "2011 Expansion Option") consisting of one full
floor and approximately 21,000 rentable square feet of space (as currently
determined, but which square footage amounts may be modified by the provisions
of Section 2.04 of this Lease) located in the Building (the "2011 Expansion
Space") on the terms and conditions set forth herein.  Landlord shall give
Tenant notice between March 1, 2009 and February 28, 2010 (the "2011 Landlord's
Notice Date") with respect to the space available, including detailed existing
condition plans, if available. To exercise the 2011 Expansion Option, Tenant
shall notify Landlord in writing ("Tenant's 2011 Expansion Notice") within
thirty (30) days of receipt of the 2011 Landlord's Notice.  Tenant's possession
date (the "2011 Possession Date") shall be as stated in the 2011 Landlord's
Notice and shall occur between July 1, 2010 and June 30, 2011.  The 2011
Expansion Space shall be delivered to Tenant on the 2011 Possession Date in its
then current, AS IS condition, except with respect to the conditions set forth
in Exhibit F - Base Building Conditions, and Landlord has no obligation to make
   ---------
any improvement to the 2011 Expansion Space, provided however, that Landlord may
contribute an amount (the "2011 Contribution") as determined in accordance with
the provisions of Section 25(s). The 2011 Contribution, if any, is to be applied
to Tenant's completion of such improvements and additions to the 2011 Expansion
Space as Tenant deems desirable including all construction improvements,
architectural and engineering fees, third party construction consultants, FF&E
expenses, or teledata related costs (the "2011 Work").  Tenant shall complete
the 2011 Work in accordance with the terms of this Lease, including, without
limitation, Exhibit B. If the costs of completing the 2011 Work exceeds the sum
            ---------
of the 2011 Contribution, Tenant shall pay all such costs.  In the event that
Tenant fails to use all of the 2011 Contribution, if any, as set forth above
within the first twelve (12) months after the 2011 Possession Date, then the
portion of the 2011 Contribution, if any,  which is not disbursed as provided
above shall be applied against installments of Rent next due from Tenant.

     (k)  Monthly Base Rent for the 2011 Expansion Space (the "2011 Expansion
Base Rent") shall be equal to the Market Rate as defined in Section 25(s) above
multiplied by the rentable area of the 2011 Expansion Space and shall commence
ninety (90) days after the 2011 Possession Date (the "2011 Lease Commencement
Date").

     (l)  Landlord shall include in the notice given on the "2011 Landlord's
Notice Date" its determination of Market Rate.  Tenant shall have thirty (30)
days after receipt of Landlord's determination to accept, reject or submit for
arbitration (as outlined in Article Twenty-Six above).  If Tenant elects to
submit to arbitration, Tenant shall name its arbitrator in its notice to
Landlord that it has selected arbitration.

     (m)  The 2001 Expansion Option, the 2004 Expansion Option, the 2005
Expansion Option, the 2007 Expansion Option and the 2011 Expansion Option are
herein collectively referred to as the "Expansion Options".

     (n)  It shall be a condition to Tenant's exercise of any of the Expansion
Options that both at the time of delivery of Tenant's Expansion Notices and at
the commencement of the

                                       50


Term with respect to any of the Expansion Options: (i) Tenant is not in Default
under this Lease, and (ii) except as may be permitted below, Tenant and/or an
Affiliate is occupying the Premises for the conduct of business. Any termination
of this Lease or termination of Tenant's right of possession shall terminate all
of Tenant's rights to any of the remaining Expansion Options. Except as set
forth below, all of the Expansion Options may be exercised only by and is
personal to Tenant and/or an Affiliate and may not be exercised by or for the
benefit of any other party.

     Notwithstanding anything to the contrary contained in this Lease, Tenant's
rights to exercise any of the Expansion Options shall not be affected by any
sublease of the Premises entered into pursuant to the terms of this Lease, but
in no event shall any sublessee have any rights to exercise any of said
Expansion Options.  In addition, the right to exercise any of the Expansion
Options shall be automatically transferred to (i) an Assignee who leases the
entire Premises pursuant to the terms of this Lease or (ii) to any Assignee
pursuant to an Assignment of this Lease for more than 25% of Tenant's then
leased space in the Building, but shall not be transferred to any Assignee
pursuant to an Assignment of this Lease for less than 25% of Tenant's then
leased space in the Building.

     (o)  In the event that Tenant exercises any of the foregoing Expansion
Options, Tenant agrees to enter into an amendment to this Lease reasonably
acceptable to Tenant incorporating the applicable Expansion Space to the
Premises and making such other conforming changes as are necessary to the
computation of the Monthly Base Rent and the calculation of Tenant's Share
applicable to such option the earlier of (i) sixty (60) days following the
exercise of the any of the Expansion Options or (ii) thirty (30) days following
the delivery of the arbitrator's decision to the parties pursuant to the terms
of Article Twenty-Six of this Lease. The Expansion Option Spaces shall be leased
for their respective Terms upon the terms and conditions provided for in this
Lease, except for such changes as are required pursuant to the terms hereof,
which shall be as set forth in the Amendment described above.  If Tenant does
not execute and deliver the Amendment to this Lease to Landlord as set forth
above, neither Landlord nor Tenant shall have any obligation to the other under
this Article Twenty-Seven.

     (p)  If Tenant does not exercise any of the Expansion Options set forth in
this Article Twenty-Seven, Tenant will still have a Right of First Offer, as set
forth in Article Twenty-Eight below, as well as a Contraction Option, as set
forth in Article Thirty, and a Termination Option, as set forth in Article
Thirty-One.

     (q)  The anticipated possession date shall be the date identified in
Landlord's Notice, which is the date the respective Expansion Space will be
delivered to Tenant for the construction of its tenant improvements. In the
event that Landlord does not deliver the expansion space to Tenant as set forth
in Landlord's Notice and Tenant is unable to have a minimum of ninety days of
pre-commencement access, then Landlord will grant Tenant a 1-for-1 day delay in
Tenant's lease commencement for the respective expansion space.

     (r)  In the event Landlord does not or is unable to deliver possession of
the expansion space to Tenant as set forth above, due solely to "Landlord's
Delay"(as defined below), then Tenant shall be entitled to abate the portion of
the Monthly Rent and Additional Rent attributable to such space on a 2 days for
every 1 day delay basis until such time as possession of the particular space is

                                       51


delivered (i.e. if such space is delivered 10 days late, then commencing on
Tenant's Commencement Date for said expansion space, Tenant shall be entitled to
the sum of 20 days' abatement of Monthly Rent and Additional Rent for said
space); provided, however, that if Landlord does not or is unable to deliver
possession of said premises by a date which is 90 days or more beyond the
anticipated Possession Date, then, in lieu of rent abatement as aforesaid,
Tenant shall have the benefit of all of the remedies for Landlord's default
provided in the Lease and at Law.

     As used herein the term "Landlord's Delay" shall exclude any delays due to
Force Majeure and tenant holdover without Landlord's consent or sufferance.
Except for the above exclusions, Landlord's Delay shall mean any delay on the
part of the Landlord in delivering to Tenant possession of the expansion space
beyond the applicable date set forth above.

     (s)  No Landlord's Delay shall be deemed to have occurred unless and until
Tenant has given written notice to Landlord of the Landlord's Delay in question.
If such action or inaction is in fact a Landlord's Delay, and is not cured
within 3 business days after Landlord's receipt of such notice, then a
Landlord's Delay shall be deemed to have occurred commencing upon the first day
after the scheduled Possession Date for the expansion space in question.

     (t)  In connection with each of the expansion options set forth in this
Article Twenty-Seven, Landlord will use commercially reasonable efforts to make
all of the spaces delivered to Tenant contiguous to itself in each option
period.

                             ARTICLE TWENTY-EIGHT
                             RIGHT OF FIRST OFFER

     (a)  During the Term, Tenant shall have a continuing right of first offer
(the "Offer Right") with respect to all or any portion of the space located in
the Low Rise or "Mid Rise" (floors 14 - 23) of the Building being marketed to
third party tenants, subject to the existing rights of other tenants' as set
forth in leases granted as of the date this Lease is fully executed (the "Offer
Space").  Whenever any Offer Space becomes or is to become available, Landlord
shall notify Tenant in writing of such fact "Landlord's First Offer Notice".
Landlord's First Offer Notice shall include a floor plan of the Offer Space,
state the date of availability of the Offer Space, include a statement as to
whether the Offer Space is also considered to be Expansion Space or Subordinate
Expansion Space and set forth such other terms (including Landlord's
determination of Monthly Base Rent) under which Landlord is willing to lease the
Offer Space. Landlord's First Offer Notice shall not be given earlier than nine
(9) months prior to the date designated by Landlord as the date such Offer Space
will become available nor later than thirty (30) days after the date on which
the Offer Space became available for leasing.  The Monthly Base Rent for the
Offer Space shall be calculated at Market Rate (as defined in Section 25(s)
hereof) multiplied by the rentable area of the Offer Space.  The Offer Space
shall be delivered to Tenant on the availability date set forth in Landlord's
First Offer Notice for the remainder of the Term in an AS IS condition, except
with respect to the conditions set forth in Exhibit F - Base Building
                                            ---------
Conditions, and Landlord has no obligation to make any improvement to the Offer
Space.

                                       52


     (b)  Tenant shall respond to Landlord's First Offer Notice within ten (10)
business days after receipt of its determination to accept, reject or submit for
arbitration Landlord's determination of the Market Rent set forth therein (as
outlined in Article Twenty-Six above). If Tenant elects to submit to
arbitration, Tenant shall name its arbitrator in its notice to Landlord that it
has selected arbitration. Tenant shall also have the right to elect to reject
the Offer Space if Landlord has determined that such space is a part of the
space available to Tenant pursuant to the Expansion Options set forth in Article
Twenty-Seven hereto or space available to Tenant pursuant to the Subordinate
Expansion Options set forth in Article Twenty-Nine hereto and such space shall
remain available to Tenant pursuant to the provisions of said Article Twenty-
Seven or Article Twenty-Nine, as applicable.  Tenant's failure to respond within
such time period shall be a waiver of Tenant's Offer Right with respect to such
Offer Space.

     (c)  It shall be a condition to Tenant's exercise of the Offer Right that
both at the time of the exercise of the Offer Right and at the time the Offer
Space is delivered: (i) Tenant is not in Default under this Lease, and (ii)
except as may be permitted below, Tenant and/or an Affiliate is occupying the
Premises for the conduct of business.  Any termination of this Lease or
termination of Tenant's right of possession shall terminate Tenant's Offer
Right.  Except as set forth below, the Offer Right may be exercised only by and
is personal to Tenant and/or an Affiliate and may not be exercised by or for the
benefit of any other party.

     Notwithstanding anything to the contrary contained in this Lease, Tenant's
rights to exercise the Offer Right shall not be affected by any sublease of the
Premises entered into pursuant to the terms of this Lease, but in no event shall
any sublessee have any rights to exercise said Offer Right.  In addition, the
right to exercise the Offer Right shall be automatically transferred to (i) an
Assignee who leases the entire Premises pursuant to the terms of this Lease or
(ii) to any Assignee pursuant to an Assignment of this Lease for more than 25%
of Tenant's then leased space in the Building, but shall not be transferred to
any Assignee pursuant to an Assignment of this Lease for less than 25% of
Tenant's then leased space in the Building.

     (d)  In the event that Tenant exercises the Offer Right, Tenant agrees to
enter into an amendment to this Lease reasonably acceptable to Tenant
incorporating the applicable Offer Space to the Premises and making such other
conforming changes as are necessary to the computation of the Monthly Base Rent
and the calculation of Tenant's Share applicable to such option the earlier of
(i) sixty (60) days following the exercise of the Offer Right or (ii) sixty (60)
days following the delivery of the arbitrator's decision to the parties pursuant
to the terms of Article Twenty-Six of this Lease.

     (e)  In the event Tenant fails to exercise its Offer Right as to the Offer
Space, the same shall be offered Tenant if it becomes available again within the
Term of this Lease.

     (f)  In the event that any Landlord's First Offer Notice states that the
Offer Space is also considered to be either Expansion Space or Subordinate
Expansion Space, Tenant's exercise of said Offer Right shall reduce the amount
of Expansion Space or Subordinate Expansion Space available to Tenant pursuant
to this Lease.

                                       53


                              ARTICLE TWENTY-NINE
                         SUBORDINATE EXPANSION OPTION

In addition to the expansion options set forth in Article Twenty-Seven hereof,
Tenant shall have the right to lease additional space in the Mid Rise (subject
to the existing tenants' rights), as set forth below:

     (a)  If the space becomes available in 2007, Tenant shall have the right to
lease additional space with a lease commencement date in 2007 (the "2007
Subordinate Expansion Option") consisting of one or two full floors and
approximately 21,000 or 42,000 rentable square feet of space (as currently
determined, but which square footage amounts may be modified by the provisions
of Section 2.04 of this Lease) located in the Building (the "2007 Subordinate
Expansion Space") on the terms and conditions set forth herein. When the 2007
Subordinate Expansion Space becomes or is to become available, Landlord shall
notify Tenant in writing of such fact ("Landlord's 2007 Subordinate Expansion
Option Notice") with respect to the space available, including detailed existing
condition plans, if available.  The Monthly Base Rent for the 2007 Subordinate
Expansion Space shall be calculated at Market Rate (as defined in Section 25(s)
hereof) multiplied by the rentable area of the 2007 Subordinate Expansion Space
and shall commence ninety-(90) days after the 2007 Subordinate Expansion Space
is delivered to Tenant. The 2007 Subordinate Expansion Space shall be demised
for the remainder of the Term on an AS IS condition, except with respect to the
conditions set forth in Exhibit F - Base Building Conditions, and Landlord has
                        ---------
no obligation to make any improvement to the 2007 Subordinate Expansion Space,
provided however, that Landlord may contribute an amount (the "2007 Subordinate
Contribution") as determined in accordance with the provisions of Section 25(s).
The 2007 Subordinate Contribution, if any, is to be applied to Tenant's
completion of such improvements and additions to the 2007 Subordinate Expansion
Space as Tenant deems desirable including all construction improvements,
architectural and engineering fees, third party construction consultants, FF&E
expenses, or teledata related costs (the "2007 Subordinate Work").  Tenant shall
complete the 2007 Subordinate Work in accordance with the terms of this Lease,
including, without limitation, Exhibit B. If the costs of completing the 2007
                               ---------
Subordinate Work exceeds the sum of  the 2007 Subordinate Contribution, if any,
Tenant shall pay all such costs. In the event that Tenant fails to use all of
the 2007 Subordinate Contribution, if any, as set forth above within the first
twelve (12) months after the 2007 Subordinate Expansion Space is delivered to
Tenant, then the portion of the 2007 Subordinate Contribution, if any, which is
not disbursed as provided above shall be applied against installments of Rent
next due from Tenant.

     (b)  Landlord shall include in Landlord's 2007 Subordinate Expansion Option
Notice its determination of Market Rate.  Tenant shall have thirty (30) days
after receipt of Landlord's determination to accept, reject or submit for
arbitration (as outlined in Article Twenty-Six above). If Tenant elects to
submit to arbitration, Tenant shall name its arbitrator in its notice to
Landlord that it has selected arbitration.

     (c)  If the space becomes available in 2009, Tenant shall also have the
right to lease additional space with a lease commencement date in 2009 (the
"2009 Subordinate Expansion Option") consisting of one or two full floors and
approximately 21,000 or 42,000 rentable square feet of space (as currently
determined, but which square footage amounts may be modified by the

                                       54


provisions of Section 2.04 of this Lease) located in the Building (the "2009
Subordinate Expansion Space") on the terms and conditions set forth herein. When
the 2009 Subordinate Expansion Space becomes or is to become available, Landlord
shall notify Tenant in writing of such fact ("Landlord's 2009 Subordinate
Expansion Option Notice") with respect to the space available, including
detailed existing condition plans, if available. The Monthly Base Rent for the
2009 Subordinate Expansion Space shall be calculated at Market Rate (as defined
in Section 25(s) hereof) multiplied by the rentable area of the 2009 Subordinate
Expansion Space and shall commence ninety-(90) days after the 2009 Subordinate
Expansion Space is delivered to Tenant. The 2009 Subordinate Expansion Space
shall be demised for the remainder of the Term on an AS IS condition, except
with respect to the conditions set forth in Exhibit F - Base Building
                                            ---------
Conditions, and Landlord has no obligation to make any improvement to the 2009
Subordinate Expansion Space, provided however, that Landlord may contribute an
amount (the "2009 Subordinate Contribution") as determined in accordance with
the provisions of Section 25(s). The 2009 Subordinate Contribution, if any, is
to be applied to Tenant's completion of such improvements and additions to the
2009 Subordinate Expansion Space as Tenant deems desirable including all
construction improvements, architectural and engineering fees, third party
construction consultants, FF&E expenses, or teledata related costs (the "2009
Subordinate Work"). Tenant shall complete the 2009 Subordinate Work in
accordance with the terms of this Lease, including, without limitation, Exhibit
                                                                        -------
B. If the costs of completing the 2009 Subordinate Work exceeds the sum of the
- -
2009 Subordinate Contribution, if any, Tenant shall pay all such costs. In the
event that Tenant fails to use all of the 2009 Subordinate Contribution, if any,
as set forth above within the first twelve (12) months after the 2009
Subordinate Expansion Space is delivered to Tenant, then the portion of the 2009
Subordinate Contribution, if any, which is not disbursed as provided above shall
be applied against installments of Rent next due from Tenant.

     (d)  Landlord shall include in Landlord's 2009 Subordinate Expansion Option
Notice its determination of Market Rate.  Tenant shall have thirty (30) days
after receipt of Landlord's determination to accept, reject or submit for
arbitration (as outlined in Article Twenty-Six above). If Tenant elects to
submit to arbitration, Tenant shall name its arbitrator in its notice to
Landlord that it has selected arbitration.

     (e)  The 2007 Subordinate Expansion Option and the 2009 Subordinate
Expansion Option are herein collectively referred to as the "Subordinate
Expansion Options".

     (f)  It shall be a condition to Tenant's exercise of either the 2007
Subordinate Expansion Option or the 2009 Subordinate Expansion Option that both
at the time of delivery of Landlord's 2007 Subordinate Expansion Option Notice
or the 2009 Subordinate Expansion Option Notice and at the commencement of the
Term with respect to either the 2007 Subordinate Expansion Option or the 2009
Subordinate Expansion Option: (i) Tenant is not in Default under this Lease, and
(ii) except as may be permitted below, Tenant and/or an Affiliate is occupying
the Premises for the conduct of business.  Any termination of this Lease or
termination of Tenant's right of possession shall terminate all of Tenant's
rights to any of the remaining Subordinate Expansion Options.  Except as set
forth below, either of the Subordinate Expansion Options may be exercised only
by and is personal to Tenant and/or an Affiliate and may not be exercised by or
for the benefit of any other party.

                                       55


     Notwithstanding anything to the contrary contained in this Lease, Tenant's
rights to exercise either of the Subordinate Expansion Options shall not be
affected by any sublease of the Premises entered into pursuant to the terms of
this Lease, but in no event shall any sublessee have any rights to exercise
either of said Subordinate Expansion Options.  In addition, the right to
exercise either of the Subordinate Expansion Options shall be automatically
transferred to (i) an Assignee who leases the entire Premises pursuant to the
terms of this Lease or (ii) to any Assignee pursuant to an Assignment of this
Lease for more than 25% of Tenant's then leased space in the Building, but shall
not be transferred to any Assignee pursuant to an Assignment of this Lease for
less than 25% of Tenant's then leased space in the Building.

     (g)  In the event that Tenant exercises either of the foregoing Subordinate
Expansion Options, Tenant agrees to enter into an amendment to this Lease
reasonably acceptable to Tenant incorporating the applicable Subordinate
Expansion Space to the Premises and making such other conforming changes as are
necessary to the computation of the Monthly Base Rent and the calculation of
Tenant's Share applicable to such option the earlier of (i) sixty (60) days
following the exercise of the either of the Subordinate Expansion Options or
(ii) thirty (30) days following the delivery of the arbitrator's decision to the
parties pursuant to the terms of Article Twenty-Six of this Lease.  The
Subordinate Expansion Option Spaces shall be leased for their respective Terms
upon the terms and conditions provided for in this Lease, except for such
changes as are required pursuant to the terms hereof, which shall be as set
forth in the Amendment described above.  If Tenant does not execute and deliver
the Amendment to this Lease to Landlord as set forth above, neither Landlord nor
Tenant shall have any obligation to the other under this Article Twenty-Nine.

     (h)  If the 2007 Subordinate Expansion Space becomes available before 2007
or the 2009 Subordinate Expansion Space becomes available before 2009, then
Tenant shall have the Offer Right set forth in Article Twenty-Eight hereof. In
the event Tenant fails to exercise its Offer Right as to either of the
Subordinate Expansion Spaces, the same shall be offered Tenant if it becomes
available again before the respective Subordinate Expansion Option is available.
Furthermore regardless of the number of times tenant fails to exercise its Offer
Right with respect to either of the Subordinate Expansion Spaces, the provisions
of this Article Twenty-Nine shall remain in full force and effect.

     (i)  As long as Tenant is leasing at least 129,097 rentable square feet
under this Lease, then no previously exercised Contraction Option (as set forth
below) shall affect Tenant's Subordinate Expansion Options as defined herein.
If, at any point in time, Tenant has exercised a Contraction Option and leases
less than 129,097 rentable square feet, the next Subordinate Expansion Option
only will become null and void.

                                ARTICLE THIRTY
                              CONTRACTION OPTION

     (a)  Tenant shall have the option (the "First Contraction Option") to
contract its premises by  8,000 to 10,000 rentable square feet (the "First
Contraction Space") effective any time during the year 2006.  If Tenant elects
to exercise the First Contraction Option, Tenant shall notify Landlord of its
intent to do so (the "Tenant's First Contraction Notice") no less than twelve
(12) months prior to the effective date thereof.  Tenant shall pay Landlord a
sum equal to two (2) years

                                       56


of the then-escalated gross rent which would next become due in connection with
the First Contraction Space after the effective date set forth in Tenant's First
Contraction Notice (the "First Contraction Payment"). Tenant shall pay the First
Contraction Payment one-half (1/2) upon delivery of Tenant's First Contraction
Notice and one-half (1/2) thirty (30) days prior to the effective date.

     (b)  Tenant shall also have the option (the "Second Contraction Option") to
contract its premises by  10,000 to 20,000 rentable square feet (the "Second
Contraction Space") effective any time during the year 2008.  If Tenant elects
to exercise the Second Contraction Option, Tenant shall notify Landlord of its
intent to do so (the "Tenant's Second Contraction Notice") no less than twelve
(12) months prior to the effective date thereof.  Tenant shall pay Landlord a
sum equal to two (2) years of the then-escalated gross rent which would next
become due in connection with the Second Contraction Space after the effective
date set forth in Tenant's Second Contraction Notice (the "Second Contraction
Payment").  Tenant shall pay the Second Contraction Payment one-half (1/2) upon
delivery of Tenant's Second Contraction Notice and one-half (1/2) thirty (30)
days prior to the effective date.

     (c)  Tenant shall also have the option (the "Third Contraction Option") to
contract its premises by  10,000 to 20,000 rentable square feet (the "Third
Contraction Space") effective any time during the year 2012.  If Tenant elects
to exercise the Third Contraction Option, Tenant shall notify Landlord of its
intent to do so (the "Tenant's Third Contraction Notice") no less than twelve
(12) months prior to the effective date thereof.  Tenant shall pay Landlord a
sum equal to two (2) years of the then-escalated gross rent which would next
become due in connection with the Third Contraction Space after the effective
date set forth in Tenant's Third Contraction Notice (the "Third Contraction
Payment").  Tenant shall pay the Third Contraction Payment one-half (1/2) upon
delivery of Tenant's Third Contraction Notice and one-half (1/2) thirty (30)
days prior to the effective date.

     (d)  The First Contraction Option, the Second Contraction Option and the
Third Contraction Option are herein collectively referred to as the "Contraction
Options".

     (e)  It shall be a condition to Tenant's exercise of any of the Contraction
Options that, both at the time of the exercise of the Contraction Option and at
the effective date thereof, Tenant is not in Default under this Lease.

     (f)  Tenant shall use commercially reasonable efforts to deliver to
Landlord space consisting of no less than 5,000 square feet of Rentable Area of
a commercially leaseable configuration with a proportional window to floor
ratio. If Tenant shall exercise any of the Contraction Options set forth in this
Article Twenty-Nine, the next effective Expansion or Subordinate Expansion
Option provided for in this Lease shall be waived by Tenant.

     (g)  Tenant's failure to strictly comply with the provisions regarding the
Contraction Options shall nullify any attempted exercise of the Contraction
Options by Tenant.  Except as set forth below, the Contraction Options may be
exercised only by and is personal to Tenant or an Affiliate and may not be
exercised by or for the benefit of any other party.

                                       57


     Notwithstanding anything to the contrary contained in this Lease, Tenant's
rights to exercise any of the Contraction Options shall not be affected by any
sublease of the Premises entered into pursuant to the terms of this Lease, but
in no event shall any sublessee have any rights to exercise any of said
Contraction Options.  In addition, the right to exercise any of the Contraction
Options shall be automatically transferred to (i) an Assignee who leases the
entire Premises pursuant to the terms of this Lease or (ii) to any Assignee
pursuant to an Assignment of this Lease for more than 25% of Tenant's then
leased space in the Building, but shall not be transferred to any Assignee
pursuant to an Assignment of this Lease for less than 25% of Tenant's then
leased space in the Building.

                              ARTICLE THIRTY-ONE
                              TERMINATION OPTION

Tenant shall have the option (the "Termination Option") to terminate this Lease
effective as of the last day of December 31, 2010 (the "Termination Effective
Date").   If Tenant elects to exercise the Termination Option, Tenant shall
notify Landlord of its intent to do so (the "Tenant's Termination Notice") no
later than June 30, 2008.  Tenant shall pay Landlord a sum equal to two (2)
years of the then-escalated gross rent which would next become due after the
Effective Date (the "Termination Payment").  Tenant shall pay the Termination
Payment one-half (1/2) upon delivery of Tenant's Termination Notice and one-half
(1/2) December 1, 2010.  It shall be a condition to Tenant's exercise of the
Termination Option that, both at the time of the exercise of the Termination
Option and on the Termination Effective Date, Tenant is not in Default under
this Lease.  Tenant's failure to strictly comply with the provisions regarding
the Termination Option shall nullify any attempted exercise of the Termination
Option by Tenant. Except as set forth below, the Termination Option may be
exercised only by and is personal to Tenant or an Affiliate and may not be
exercised by or for the benefit of any other party.

     Notwithstanding anything to the contrary contained in this Lease, Tenant's
rights to exercise the Termination Option shall not be affected by any sublease
of the Premises entered into pursuant to the terms of this Lease, but in no
event shall any sublessee have any rights to exercise said Termination Option.
In addition, the right to exercise the Termination Option shall be automatically
transferred to an Assignee who leases the entire Premises pursuant to the terms
of this Lease, but shall not be available to any Assignee pursuant to an
Assignment of this Lease for less than all of Tenant's then leased space in the
Building.

                              ARTICLE THIRTY-TWO
                                    SIGNAGE

     (a)  Tenant shall have the right, upon leasing, occupying and maintaining
under lease at least 191,000 rentable square feet in the Building, to control
naming rights to the Building once the rights currently granted to Chase Bank
have either expired or been relinquished pursuant to the terms of the Chase Bank
lease now in effect. Not withstanding the foregoing, Landlord agrees not to
grant Building naming rights to any other tenant who leases or will lease less
than 150,000 rentable square feet.

                                       58


     (b)  If Tenant is granted naming rights to the Building as set forth above,
Tenant will be permitted to furnish and install signage on the exterior of the
Building at Tenant's sole expense. The exact size, location and design of the
signage shall be similar to the Chase Bank signage and shall be approved by
Landlord which consent shall not be unreasonably withheld or delayed.

     (c)  As long as Tenant leases at least 129,097 rentable square feet in the
Building, Tenant shall have the right to install an identification sign on the
elevator wall at a low-rise elevator bank using Tenant's standard corporate logo
or graphics. All signs shall be affixed in such manner as reasonably approved by
Landlord.  The size and location of the signage shall be mutually agreed upon by
Landlord and Tenant. Except as hereinprovided, Tenant shall not display,
maintain or affix on any place on or about the Building any sign, notice, legend
or advertisement.

                             ARTICLE THIRTY-THREE
                               PERSONNEL BRIDGE

     (a)  Pursuant to the terms and conditions of the Prior Lease, Tenant has
constructed and currently is responsible for the Bridge.  Tenant shall, at its
sole cost and expense, be responsible for the operation (including, without
limitation, security, heating, cooling and cleaning of the interior and exterior
of the Bridge), repair, maintenance and replacement of the Bridge.  Without
limiting the foregoing, Tenant shall, at its sole cost and expense, at all times
maintain the Bridge in good order, appearance, condition and repair and shall
comply with all applicable Laws.  Tenant shall, at its sole cost and expense,
repair and restore or demolish the Bridge if damaged by any fire or other
casualty.  Tenant shall pay all real estate taxes in connection with or
attributable to the Bridge, including, without limitation, any increases in the
real estate taxes for the Building attributable to the Bridge.   Upon expiration
of the Term hereof or upon any termination of this Lease, the provision of
Section 12.01 hereof shall apply.

     (b)  Tenant agrees to indemnify and hold harmless the Indemnitees from and
against any and all claims, demands, actions, liabilities, damages, costs and
expenses (including court costs and reasonable attorneys' fees), for injuries to
all persons and damage to or loss of property arising in connection with the
Bridge, including, without limitation, any and all claims, demands, actions,
liabilities, damages, costs and expenses arising from any breach of security of
the Premises or the Building in connection with the Bridge, from the maintenance
and condition of the Bridge, from any activity, use, work, or thing done,
permitted or suffered by Tenant in or about the Bridge or from any breach or
default on the part of Tenant in the performance of any covenant or agreement on
the part of Tenant to be performed under this Lease in connection with the
Bridge or due to any other act or omission of Tenant, its agents or employees in
connection with the Bridge.  If any such proceeding is filed against any of the
Indemnitees, Tenant agrees, upon Landlord's request, to defend such proceeding
at its sole cost by legal counsel reasonably satisfactory to Landlord.

     (c)  Tenant shall have no right to assign, transfer or otherwise dispose of
its rights or interests under this Article Thirty-Three, such rights being
granted solely to The Northern Trust Company; provided however, that any
Affiliate shall be entitled to the rights granted to Tenant hereunder.

                                       59


                              ARTICLE THIRTY-FOUR
                                 MISCELLANEOUS

34.01  LATE CHARGES

All payments required hereunder (other than the Monthly Base Rent, Rent
Adjustments, and Rent Adjustment Deposits, which shall be due as hereinbefore
provided) to Landlord shall be paid within thirty (30) days after Landlord's
demand therefor.  All such amounts (including, without limitation Monthly Base
Rent, Rent Adjustments, and Rent Adjustment Deposits) not paid when due shall
bear interest from the date due until the date paid at the Default Rate in
effect on the date such payment was due.

34.02  WAIVER OF JURY TRIAL

As a material inducement to the parties to enter into this Lease, Landlord and
Tenant each hereby waive their respective right to a trial by jury of any issues
relating to or arising out of its obligations under this Lease or its occupancy
of the Premises.  The parties acknowledge that they have read and understood the
foregoing provision.

34.03  OPTION

This Lease shall not become effective as a lease or otherwise until executed and
delivered by both Landlord and Tenant. The submission of the Lease to Tenant
does not constitute a reservation of or option for the Premises, except that it
shall constitute an irrevocable offer on the part of Tenant in effect for five
(5) business days to lease the Premises on the terms and conditions herein
contained.

34.04  TENANT AUTHORITY

Tenant represents and warrants to Landlord that it has full authority and power
to enter into and perform its obligations under this Lease, that the person
executing this Lease is fully empowered to do so, and that no consent or
authorization is necessary from any third party.  Landlord may request that
Tenant provide Landlord evidence of Tenant's authority.

34.05  ENTIRE AGREEMENT

This Lease, the Exhibits attached hereto and the Workletter contain the entire
agreement between Landlord and Tenant concerning the Premises and there are no
other agreements, either oral or written, and no other representations or
statements, either oral or written, on which Tenant has relied. This Lease shall
not be modified except by a writing executed by Landlord and Tenant.

34.06  MODIFICATION OF LEASE FOR BENEFIT OF MORTGAGEE

If Mortgagee of Landlord requires a modification of this Lease which shall not
result in any increased cost or expense to Tenant or in any other substantial
and adverse change in the rights and obligations of Tenant hereunder, then
Tenant agrees that the Lease may be so modified.

                                       60


34.07  SATELLITE SYSTEM

During the term of this Lease (and any amendments or renewals), Tenant shall
have an option to enter into a non-exclusive license (the "License") to install,
operate, maintain and operate a reception-only satellite dish antenna, mounted
on a non-penetrating structure, and related plenum-rated cabling (the "System"),
upon and subject to the terms and conditions set forth in Exhibit I attached
hereto and made a part hereof.

34.08  EXCULPATION

Tenant agrees, on its behalf and on behalf of its successors and assigns, that
any liability of Landlord with respect to this Lease shall never exceed the
amount of offset which Tenant utilizes pursuant to Section 11.05 of this Lease
plus an amount not to exceed $10,000,000 (the "Liability Cap") and Tenant shall
not be entitled to recover from Landlord any amounts in excess of the Liability
Cap.

34.09  ACCORD AND SATISFACTION

No payment by Tenant or receipt by Landlord of a lesser amount than any
installment or payment of Rent due shall be deemed to be other than on account
of the amount due, and no endorsement or statement on any check or any letter
accompanying any check or payment of Rent shall be deemed an accord and
satisfaction, and Landlord may accept such check or payment without prejudice to
Landlord's right to recover the balance of such installment or payment of Rent
or pursue any other remedies available to Landlord.  No receipt of money by
Landlord from Tenant after the termination of this Lease or Tenant's right of
possession of the Premises shall reinstate, continue or extend the Term.

34.10  LANDLORD'S OBLIGATIONS ON SALE OF BUILDING

In the event of any sale or other transfer of the Building, Landlord shall be
entirely freed and relieved of all agreements and obligations of Landlord
hereunder accruing or to be performed after the date of such sale or transfer,
provided that all of Landlord's obligations hereunder are specifically assumed
by the buyer or transferee.

34.11  BINDING EFFECT

This Lease shall be binding upon and inure to the benefit of Landlord and Tenant
and their respective heirs, legal representatives, successors and permitted
assigns.

34.12  CAPTIONS

The Article and Section captions in this Lease are inserted only as a matter of
convenience and in no way define, limit, construe, or describe the scope or
intent of such Articles and Sections.

                                       61


34.13  APPLICABLE LAW

This Lease shall be construed in accordance with the laws of the State of
Illinois.  If any term, covenant or condition of this Lease or the application
thereof to any person or circumstance shall, to any extent, be invalid or
unenforceable, the remainder of this Lease, or the application of such term,
covenant or condition to persons or circumstances other than those as to which
it is held invalid or unenforceable, shall not be affected thereby and each
item, covenant or condition of this Lease shall be valid and be enforced to the
fullest extent permitted by law.

34.14  ABANDONMENT

In the event Tenant vacates or abandons the Premises but is otherwise in
compliance with all the terms, covenants and conditions of this Lease, Landlord
shall (i) have the right to enter into the Premises in order to show the space
to prospective tenants during the last twelve (12) months of the Term and in
accordance with the provisions of Section 7.02 of this Lease, and (ii) have the
right to reduce the services provided to Tenant pursuant to the terms of this
Lease to such levels as Landlord reasonably determines to be adequate services
for an unoccupied premises. Tenant expressly acknowledges that in the absence of
written notice pursuant to Section 11.02(a), hereof, none of the foregoing acts
of Landlord or any other act of Landlord shall constitute a termination of
Tenant's right to possession or an acceptance of Tenant's surrender of the
Premises, and the Lease shall continue in effect. As long as Tenant is not in
monetary default, or any other default, neither vacating the Premises nor
discontinued occupancy shall constitute a default by Tenant.

34.15  LANDLORD'S RIGHT TO PERFORM TENANT'S DUTIES

If Tenant fails timely to perform any of its duties under this Lease or the
Workletter within the time frames provided for in this Lease or within thirty
(30) days of receipt of notice from Landlord of its failure to so perform
(except with respect to the payment of Rent which shall be in accordance with
the provisions of Section 11.01(a)(i)), Landlord shall have the right (but not
the obligation), to perform such duty on behalf and at the expense of Tenant
without additional prior notice to Tenant, and all reasonable sums expended or
expenses incurred by Landlord in performing such duty shall be deemed to be
additional Rent under this Lease and shall be due and payable thirty (30) days
after request for payment.

34.16  GENERATOR

Tenant shall have to right to elect to install a generator in the Building to
serve the Premises to the extent that Landlord has space available which has
been designated for such use.  Tenant shall notify Landlord of such election in
writing indicating the type and size of the generator.  Landlord shall, within
thirty (30) days of such notice of election, inform Tenant as to whether there
is any space available and, if so, of the terms on which Landlord would enter
into a license agreement for such space and the location at which such generator
could be placed (the "Generator Terms").  Tenant shall thereafter have twenty
(20) days to notify Landlord if it accepts or declines the Generator Terms and,
if Tenant accepts the Generator Terms, it must provide Landlord with the actual
plans and specs for such generator.  Landlord shall thereafter have an
additional twenty(20) days to approve such plans and if Landlord approves the
plans and specs, Landlord and Tenant

                                       62


shall enter into a license agreement for such generator in form and substance
reasonably satisfactory to both parties within the succeeding sixty (60) day
period. Said license agreement will govern the installation, operation and
maintenance of the generator and shall also provide that Tenant, at Tenant's
sole expense, will comply with all Laws governing the installation, operation
and maintenance of the generator.

34.17  RIDERS

All Riders attached hereto and executed both by Landlord and Tenant shall be
deemed to be a part hereof and hereby incorporated herein.

     IN WITNESS WHEREOF, this Lease has been executed as of the date set forth
in Section 1.01(4) hereof.


LANDLORD:                                TENANT:

METROPOLITAN LIFE INSURANCE              THE NORTHERN TRUST COMPANY
COMPANY


By:    /s/ Donald K. Devine              By:     /s/ James R. Taylor
    -----------------------                  -----------------------
    Its:   Vice President                    Its:    Vice President
           ----------------                     --------------------

                                       63


                                 SCHEDULE ONE

                        Controllable Operating Expenses
                        -------------------------------



          Cap Amount          Scenario 1                 Scenario 2
                        Actual/Paid(Difference)    Actual/Paid(difference)
                        -----------------------    -----------------------
                                          
Year 1    6.00%         10.0%/6.0%(-4.0%)          6.0%/6.0%(0%)

Year 2    6.36%         10.0%/6.36%(-7.64%)        6.0%/6.0%(+.36%)

Year 3    6.74%         5.0%/6.74%(-5.9%)          6.0%/6.0%(+1.10%)

Year 4    7.15%         5.0%/7.15%(-3.75%)         6.0%/6.0%(+2.25%)

Year 5    7.57%         5.0%/7.57%(-1.18%)         12.0%/7.57%(-4.43%)

Year 6    None          12.0%/12/0%*               8.0%/10.25%**


*No "catch-up" since every prior year reached the maximum allowable - shortfall
of 1.18% will not be paid

**"Catch-up" applies to the extent that 2.25% was not used in prior years -
shortfall of  2.18% will not be paid

                           Schedule A - Page 1 of 1



                                   EXHIBIT A

                               PLAN OF PREMISES
                               ----------------

                              EXHIBIT A - Page 1


                                   EXHIBIT B

                             WORKLETTER AGREEMENT

This agreement (the "Agreement") is attached to and made a part of the Office
Lease dated ________________ (the "Lease") between Metropolitan Life Insurance
Company, a New York corporation and The Northern Trust Company, an Illinois
corporation.  The terms of this Agreement shall be applicable to the Tenant Work
and shall not be applicable to Tenant Alterations as set forth in Article Nine
of the Lease.  Any terms used in this Agreement which are not otherwise defined
shall have the same meaning as in the Lease.

     1.   On the Commencement Date, Tenant shall have accepted the Initial
Premises in an AS IS condition and Tenant shall perform the Tenant Work as set
forth herein and in the Lease.

     In the event that Tenant exercises any of the options set forth in Articles
Twenty-Seven, Twenty-Eight or Twenty-Nine with respect to adding additional
space to the Premises, the following provision shall also apply:

     On the Commencement Date of each option set forth above, Tenant shall have
accepted the applicable Premises in an AS IS condition and Tenant shall perform
such Tenant Work in the Premises as are necessary for Tenant to operate its
business from the Premises in accordance with the terms and conditions set forth
herein.

     2.   Tenant shall cause to be prepared such architectural, design,
mechanical, electrical, plumbing and other plans (the "Tenant Plans") as are
necessary for completion of the Tenant Work.  Tenant shall submit the Tenant
Plans to Landlord for its approval, which approval shall not be unreasonably
withheld.  Landlord shall complete its review of the Tenant Plans within five
(5) business days following receipt thereof and Landlord shall take all
reasonable steps to avoid causing any delay to Tenant's completion of the Tenant
Work.  In the event of any exception by Landlord to Tenant Plans, Tenant shall
take steps to appropriately modify the Tenant Plans and shall resubmit the
revised Tenant Plans to Landlord, which shall again be reviewed within five (5)
business days following receipt.

     Landlord's approval of the Tenant Plans shall in no way be deemed
assurances that the Tenant Work complies with applicable laws, ordinances or
codes, or any implied warranty of the adequacy or sufficiency of the design or
quality of any items shown therein.  Landlord shall cooperate with Tenant by
signing any documents required to enable Tenant to obtain a building permit and
whatever authorizations are required to proceed with the Tenant Work when
requested by Tenant, even if such request is made prior to Landlord's approval
of Tenant Plans.  Landlord shall not be deemed to have waived its right to
approve or disapprove Tenant Plans if Landlord has not approved Tenant Plans at
the time it signs such documents.

     3.   Tenant shall make such contracts and arrangements as Tenant determines
to be necessary and desirable for the construction and installation of Tenant
Work using contractors and subcontractors reasonably acceptable to Landlord.
Landlord agrees that Landlord shall approve or

                              EXHIBIT B - Page 1


disapprove any general contractor and/or subcontractors within five (5) business
days after submission by Tenant.

     4.   Prior to the commencement of the construction and installation of the
Tenant Work, or the delivery of any materials to the Premises or the Building,
Tenant shall (a) procure all required licenses, permits and approvals from all
governmental authorities including, but not limited to, the substitution of
Tenant's self-certification in connection therewith as may be acceptable to the
City of Chicago Building Department from time to time, and (b) deliver to
Landlord certificates evidencing the following insurance coverages which are
required by Landlord of general contractor and which shall remain in effect for
so long as any Tenant Work is being undertaken or performed on the Premises or
in the Building: Comprehensive General Liability policies having a single
aggregate limit of $5,000,000, covering operations and premises liability,
completed operations liability, broad form property damage, personal injury,
blanket contractual liability insurance coverage, independent contractor's
coverage, and workers' compensation in statutory amounts.  Tenant shall also
deliver to Landlord copies of certificates evidencing such insurance as shall be
required by the general contractor of any sub-contractors who work in the
Building.  The completed operations liability coverage shall continue in force
for one year after the date of the substantial completion of the Tenant Work.
Tenant agrees to defend and hold the Indemnitees harmless from all actions,
claims, liability and damages in any way arising out of or relating to the
construction and installation of the Tenant Work in the Premises other than for
claims, actions, liability and damages arising out of the negligence or
misconduct of Landlord, its employees, agents, contractors or subcontractors,
and to name the Indemnitees as additional insured parties as their interests may
appear in such insurance policies.

     5.   Tenant agrees to construct and install the Tenant Work using quality
materials and workmanship compatible with the Building.  Tenant shall use
qualified craftsmen and laborers who are compatible with the trade unions
operating in the Building and Tenant shall use its reasonable efforts to avoid
labor unrest in the Premises and in the Building.  Tenant shall, with Landlord's
prior approval, schedule the delivery of materials and performance of work in
the Premises and Building in such manner as not to disrupt Building operations,
which approval shall not be unreasonably withheld.  The loading dock and freight
elevators are open Monday through Friday, 7:30 a.m. to 4:00 p.m.  Exclusive use
of the facilities is scheduled on a first-come, first-served basis, with the
Office of the Building, subject to Landlord's reasonable scheduling guidelines.
Landlord shall cooperate with Tenant and Tenant's contractor in permitting
access to the Premises through freight elevator and loading docks, subject to
Landlord's reasonable scheduling guidelines. Landlord will allow Tenant to use
the Building freight elevators and loading dock after normal business hours at
no additional charge except for the actual cost of such additional security
and/or elevator operator personnel that Landlord may deem necessary.

     6.   During completion of the Premises, Tenant shall not be charged for
utility usage within the Premises.  Tenant shall pay costs for hoisting and
freight elevator usage in accordance with Landlord's regular published rates
therefor. If Tenant does not request Landlord to provide project management
services, Tenant shall reimburse Landlord's reasonable actual out-of-pocket
expenses for any necessary consultants to review plans and specifications.

                              EXHIBIT B - Page 2


     7.   Landlord shall disburse each of the Contribution, the 2001
Contribution, the 2004 Contribution, the 2005 Contribution, the 2007
Contribution, the 2011 Contribution, the 2007 Subordinate Contribution and the
2009 Subordinate Contribution no more often than once monthly as and when the
Tenant Work progresses within thirty (30) days following submission of lien
waivers and such other documentation as Landlord shall reasonably require, all
as further set forth on Schedule A attached hereto and made a part hereof,
subject to Tenant's right to apply any or all of such Contributions against Rent
in accordance with the provisions of the Lease.

     8.   Upon completion of the Tenant Work and the Tenant's acceptance
thereof, Tenant shall so certify to Landlord and Tenant shall deliver to
Landlord copies of the final affidavits, certificates and copies of waivers of
lien of Tenant and all contractors, subcontractors and materialmen and the
copies of affidavit of Tenant's architect certifying that all the Tenant Work
has been constructed and installed in the Premises in substantial conformity
with the Tenant Plans, as from time to time amended with Landlord's approval.

     9.   Tenant accepts, assumes and shall be solely responsible for all risks
for the construction and installation of the Tenant Work other than for risks
resulting from the negligence or misconduct of Landlord, its employees, agents,
contractors or subcontractors.  Except as set forth in the Lease, the
Indemnitees shall have no liability or obligation to Tenant or to any other
parties, and make no warranties or representations, including any warranty of
fitness for particular use, to Tenant by reason of any approval, consultation or
other services provided by Landlord or Manager, its or their employees, agents,
contractors or subcontractors.  Landlord shall have no responsibility to Tenant
or to any other parties for the construction and installation of the Tenant
Work.

     10.  Tenant shall have access to the Premises for the purposes of
installation of the Tenant Work and such access and construction shall be in
accordance with the provisions of this Rider and other provisions of the Lease.
Tenant agrees that any such entry into and access to the Premises shall be
deemed to be under all of the terms, covenants, conditions and provisions of the
Lease, except as to the covenant to pay Rent.  Tenant further agrees that to the
extent permitted by law, and excepting the negligence or misconduct of Landlord
(and its employees or agents) and the Indemnitees, Landlord and the Indemnitees
shall not be liable in any way for any injury or death to any person or persons,
loss or damage to any Tenant Work and installations made in the Premises or loss
or damage to property placed therein the same being at Tenant's sole risk.

     11.  Within sixty days following Tenant's occupancy of the Premises for the
conduct of business, Tenant shall provide Landlord with a set of "as built"
plans, drawings and specifications for the Premises and a list of all building
materials used in the completion of the Tenant Work (by manufacturer and lot
numbers), including for example, ceiling tile, wall coverings, floor coverings
and adhesives.

                              EXHIBIT B - Page 3


                                  Schedule A
                                  ----------

                              TENANT CONTRIBUTION
                           REIMBURSEMENT GUIDELINES

The following conditions are necessary to process tenant improvement
reimbursements.  All reimbursements are processed as provided in the Lease.

1)   For partial or full payments of tenant improvement reimbursements, provide
     a letter to CB Richard Ellis, Inc., Attention: Office of the Building,
     formally requesting the reimbursement along with the following documents:

     a)   Cover sheet listing each contractor and the corresponding payment
          request amount

     b)   A copy of the payment request followed by the corresponding original
          lien waiver for:


          i)   The general contractor covering the full value of the request

          ii)  Each sub-contractor, including architectural and engineering
               consultants

     c)   The lien waiver must name Metropolitan Life Insurance Company, as
          owner.

2)   Electrical and data contractors are required to repair fire stop
     penetrations and to remove debris.  Inspection of electrical and telephone
     closets will take place after final request for payment is received.  The
     following charges will apply if the accompanying condition is present:

     a)   Removal of debris, including wire, pipe, garbage, etc.    $75.00
     b)   Each fire stop penetration repair                         $50.00

                              EXHIBIT B - Page 4


                                   EXHIBIT C

                             RULES AND REGULATIONS
                             ---------------------


1.   No sign, lettering, picture, notice or advertisement shall be placed on any
outside window or in a position to be visible from outside the Premises and if
visible from the outside or public corridors within the Building shall be
installed in such manner and be of such character and style as Landlord shall
approve in writing.

2.   Tenant shall not use the name of the Building for any purpose other than
Tenant's business address; Tenant shall not use the name of the Building for
Tenant's business address after Tenant vacates the Premises; nor shall Tenant
use any picture or likeness of the Building in any circulars, notices,
advertisements or correspondence.

3.   No article which is explosive or inherently dangerous is allowed in the
Building.

4.   Tenant shall not represent itself as being associated with any company or
corporation by which the Building may be known or named.

5.   Sidewalks, entrances, passages, courts, corridors, halls, elevators and
stairways in and about the Premises shall not be obstructed.

6.   No animals (except for dogs in the company of a blind person), pets,
bicycles or other vehicles shall be brought or permitted to be in the Building
or the Premises.

7.   Room-to-room canvasses to solicit business from other tenants of the
Building are not permitted; Tenant shall not advertise the business, profession
or activities of Tenant conducted in the Building in any manner which violates
any code of ethics by any recognized association or organization pertaining to
such business, profession or activities.

8.   Tenant shall not waste electricity, water or air-conditioning and shall
cooperate fully with Landlord to assure the most effective and efficient
operation of the Building's heating and air-conditioning systems.

9.   No locks or similar devices shall be attached to any door except by
Landlord and Landlord shall have the right to retain a key to all such locks
except for such secured areas as were established in connection with the Prior
Lease or which may be established by mutual consent of the parties hereto.
Tenant may not install any locks without Landlord's prior approval.

10.  Tenant assumes full responsibility of protecting the Premises from theft,
robbery and pilferage; the Indemnitees shall not be liable for damage thereto or
theft or misappropriation thereof.  Except during Tenant's normal business
hours, Tenant shall keep all doors to the Premises locked and other means of
entry to the Premises closed and secured.  All corridor doors shall remain
closed at all times.  If Tenant desires telegraphic, telephones, burglar alarms
or other electronic mechanical devices, the Landlord will, upon request direct
where and how connections

                              EXHIBIT C - Page 1


and all wiring for such services shall be installed and no boring, cutting or
installing of wires or cables is permitted without Landlord's prior consent,
which shall not be unreasonably withheld.

11.  Except with the prior approval of Landlord (other than in connection with
the provisions of Section 9.01), all cleaning, repairing, janitorial,
decorating, painting or other services and work in and about the Premises shall
be done only by authorized Building personnel.

12.  The weight, size and location of safes, furniture, equipment, machines and
other large or bulky articles shall be subject to Landlord's approval and shall
be brought to the Building and into and out of the Premises at such times and in
such manner as the Landlord shall direct and at Tenant's sole risk and cost.
Prior to Tenant's removal of any of such articles from the Building, Tenant
shall obtain written authorization of the Office of the Building and shall
present such authorization to a designated employee of Landlord.

13.  Tenant shall not overload the safe capacity of the electrical wiring of the
Building and the Premises or exceed the capacity of the feeders to the Building
or risers.

14.  To the extent permitted by law, Tenant shall not cause or permit picketing
or other activity which would interfere with the business of Landlord or any
other tenant or occupant of the Building, or distribution of written materials
involving its employees in or about the Building, except in those locations and
subject to time and other limitations as to which Landlord may give prior
written consent.

15.  Tenant shall not cook, otherwise prepare or sell any food or beverages in
or from the Premises or use the Premises for housing accommodations or lodging
or sleeping purposes except that Tenant may install and maintain vending
machines, coffee/beverage stations and food warming equipment and eating
facilities for the benefit of its employees or guests, provided the same are
maintained in compliance with applicable laws and regulations and do not disturb
other tenants in the Building with odor, refuse or pests.

16.  Tenant shall not permit the use of any apparatus for sound production or
transmission in such manner that the sound so transmitted or produced shall be
audible or vibrations therefrom shall be detectable beyond the Premises; nor
permit objectionable odors or vapors to emanate from the Premises.

17.  No floor covering shall be affixed to any floor in the Premises by means of
glue or other adhesive without Landlord's prior written consent.

18.  Tenant shall at all time maintain the window blinds in the lowered
position, though Tenant may keep the louvers open.

19.  Except as set forth in Section 7.01(a) of the Lease, Tenant shall only use
the freight elevator for mail carts, dollies and other similar devices for
delivering material between floors that Tenant may occupy.

                              EXHIBIT C - Page 2


20.  No smoking, eating, drinking, loitering or laying is permitted in the
Common Area except in designated areas.

21.  Landlord may require that all persons who enter or leave the Building
identify themselves to security guards, by registration or otherwise.  Landlord,
however, shall have no responsibility or liability for any theft, robbery or
other crime in the Building.  Tenant shall assume full responsibility for
protecting the Premises, including keeping all doors to the Premises locked
after the close of business.

22.  Tenant shall comply with all safety, fire protection and evacuation
procedures and regulations established by Landlord or any governmental agency
and shall cooperate and participate in all reasonable security and safety
programs affecting the Building.

                              EXHIBIT C - Page 3


                                   EXHIBIT D

                            CLEANING SPECIFICATIONS
                            -----------------------

Time of Cleaning
- ----------------

     The cleaning operations shall be performed on a five (5) days per week
     basis after normal business hours, Monday through Friday, excluding
     holidays.:

Lobby Areas - Elevators
- -----------------------

     1.   Floor of entrance lobby to be swept and washed as required.

     2.   Floors in elevator cars to be vacuumed, swept or washed nightly.

     3.   Lobby walls to be washed down when necessary.

     4.   Clean lobby lights, globes and fixtures when necessary.

Washrooms
- ---------

     1.   All floors to be damp mopped and thoroughly cleaned nightly using a
          dust control method.

     2.   Toilet seats, bowls, urinals and washbasins to be cleaned and
          disinfected nightly.

     3.   All body contact points in washrooms, such as water taps, receptacles
          and dispensers, door plates and flush valves to be disinfected and
          polished nightly.

     4.   Flush tanks, dispensers, receptacles, mirrors, shelves and all exposed
          piping to be dusted and cleaned nightly.

     5.   Sani-cans to be emptied, washed and disinfected sanibags replaced
          nightly.

     6.   Waste paper to be removed nightly.

     7.   Paper receptacles to be washed and disinfected weekly.

     8.   All toilet bowls and urinals to be descaled weekly.

     9.   Soap containers, toilet paper, towel dispensers and sanitary napkin
          dispensers to be replenished daily.

     10.  Toilet partitions to be cleaned daily.

                              EXHIBIT D - Page 1


Office Areas - Nightly Service
- ------------------------------

     1.   All ash trays and smoking stands to be emptied, washed and polished.

     2.   All waste receptacles will be emptied and cleaned.

     3.   Drinking fountains will be washed and polished and all metal bright
          work will be kept in a clean condition.

Office Areas - Periodic Service
- -------------------------------

     1.   Dusting of all furnishings and fixtures

     2.   Handmarks to be removed from partition and entrance door glass, doors,
          frames and walls where the finished surface permits as required.

     3.   Fabric covered furnishings will be brushed or vacuumed to remove all
          dust and dirt as required.

     4.   All carpeted areas will be vacuumed daily.

     5.   All telephones to be damp wiped monthly.

     6.   High dusting (above arm's reach) will be done once per month.

     7.   Hard surfaced floors to be maintained in a clean and polished
          condition by any of the following methods using top quality, anti-slip
          floor materials:

          a)   Strip and rewax quarterly.

          b)   Spray buff as required but not less than weekly.  Strip and rewax
               annually.

          c)   Light mop and rewax as required but not less than monthly.  Strip
               and rewax annually.

     8.   All vertical surfaces of furniture to be damp wiped once per week.

     9.   All window sills to be damp wiped once per week.

     10.  Air diffusers will be cleaned twice per year.

     11.  Venetian blinds will be dusted quarterly.

                              EXHIBIT D - Page 2


                                   EXHIBIT E


                HEATING, VENTILATING AND AIR-CONDITIONING SYSTEM
                ------------------------------------------------


The Heating, Ventilating and Air-Conditioning (HVAC) system is designed to
maintain an interior temperature of 75 degrees Fahrenheit (dry bulb, 50 percent
relative humidity) when outdoor summer temperature is 94 degrees Fahrenheit (dry
bulb) - 72 degrees Fahrenheit (wet bulb) and 72 degrees Fahrenheit (dry bulb, 20
percent relative humidity, this is a reference only, no humidity is added to the
air by the building) when outdoor winter temperature is -10 degrees Fahrenheit
(dry bulb). This is based on an average occupancy density of not more than one
(1) person per 150 to 180 square feet of usable area and an average electrical
load of 3.5 watts per square foot of usable area.

The air distribution system consists of dual floor-by-floor air handling units
with variable air volume distribution and plenum air return. A separate air
handler serves the window wall and the interior spaces.

For floors 6-37 at the exterior curtain walls, perimeter heating and cooling is
by means of thermostat regulated variable air volume (V.A.V.) boxes. Floors 1 -
5 have electric baseboard heat with metal enclosure at perimeter exterior wall.

The interior zone cooling is by means of V.A.V. boxes. Thermostats, one per
V.A.V. box, are spaced approximately one per 1,200 square feet of usable floor
area of the premises.

The fan room on each floor has central chilled water plant supplying two-(2) air
handling systems for each floor.

Variable volume air distribution with slot-type diffusers on the perimeter and
perforated or slot diffusers in the interior.

The system design allows for the maximum utilization of "free cooling", the
ability to maintain comfortable environmental conditions without operating the
central cooling plant.

Cooling tower water is available year round for tenant's auxiliary cooling
requirements at an additional cost to tenant and subject to available capacity.

Given these design parameters, the building is operated under ASHRAE standards.




                               EXHIBIT E - Page 1


                                   EXHIBIT F

                           BASE  BUILDING CONDITIONS
                           -------------------------


Landlord shall deliver the applicable space to Tenant in the condition outlined
below at Landlord's sole cost and expense:

1) General - Premises are accepted "as-is"


 .  To the extent available, the Landlord will supply Tenant plans representing
   the existing condition of the premises.
 .  Landlord will comply with ADA requirements in all common areas of the
   building.
 .  Locking devises and closers for all common area exits, stairwells,
   electrical/telephone closets and mens/women toilets. Tenant, at its cost may
   install combination locks on all toilet entrance doors on floors where the
   Tenant is a full-floor tenant.

2) Major damage to walls not being removed by the Tenant will be repaired at the
   expense of the Landlord.

3) The Landlord will contribute up to $1.00 per square foot, but not more than
   the actual cost per square foot, to achieve floor leveling to within 1/4 inch
   per 10 lineal feet non-cumulative. In the event the Tenant elects to level
   any area less than the entire demised expansion space being leased, open and
   free of partitions, the Tenant agrees at the expiration of the term, at the
   Landlord election, to remove the leveling material, unless such leveling is
   necessary to bring a small portion of the area up to the existing grade level
   (ie., if there is an area of indentation or sunken space, such space shall be
   raised to existing grade level).

4) Landlord will provide air for the premises for ventilation purposes of not
   less than 1.04 cfm per usable square foot of floor area or .89 cfm per
   rentable square foot of floor area.



                               EXHIBIT F - Page 1


                                   EXHIBIT G

                    MAJOR CATEGORIES FOR OPERATING EXPENSES
                    ---------------------------------------



1.  Utilities
2.  HVAC contract and materials
3.  Repairs and Maintenance
4.  Janitorial and cleaning
5.  Security
6.  Landscaping
7.  Tenant relations
8.  Administration
9.  Management Fee
10. Insurance

Landlord will supply sufficient detail for each major category, including the
subcategories within each major category.  For example, utilities could have
subcategories which would include gas, water, electric, and sewer.

Additionally, Landlord will indicate the monthly building occupancy for the
calendar year.  Attached is a sample billing prepared by Landlord's Building
Manager, (including all referenced footnotes to the billing statement).

Notwithstanding anything contained in this Lease to the contrary, Landlord shall
be permitted to change the account structure if Landlord changes its chart of
accounts or method of accounting, so long as the level of detail does not
change.



                               EXHIBIT G - Page 1


                                   EXHIBIT H

                            CATEGORIES FOR REMOVAL
                            ----------------------


1.   Additional HVAC and all related electrical wiring, conduit and other
related electrical hardware, and ductwork specifically installed for the unit,
except for supplemental equipment currently contained in the telecom rooms.

2.   Any vaults or similar installation.

3.   All Electrical conduit larger than 3/4 inch that is not used for standard
lighting and office use.  In addition to the conduit, all related connectors,
boxes and switchgear will be removed.

4.   All raised floors.

5.   Stairwell (if any).

6.   Generator (if any).

7.   Roof Top communication and all related wiring (if any).

8.   Close all floor, ceiling and roof openings, and close any staircases or
other openings between floors (if any).

9.   If any of the Tenant Additions which were installed by Tenant involved the
lowering of ceilings, raising of floors or the installation of specialized wall
or floor coverings or lights, then Tenant shall also be obligated to return such
surfaces to their condition prior to the commencement of this Lease.   Tenant
shall also be required to close any staircases or other openings between floors.



                               EXHIBIT H - Page 1


                                   EXHIBIT I

                          SATELLITE LICENSE AGREEMENT
                          ---------------------------

     This License Agreement ("Agreement") is made and entered into as of this
________ day of _______, 20___, by and between METROPOLITAN LIFE INSURANCE
COMPANY, a New York corporation ("Licensor") and THE NORTHERN TRUST COMPANY, a
national banking corporation ("Licensee").

                                  WITNESSETH:

     WHEREAS, Tenant leased certain premises in 10 South LaSalle Street,
Chicago, Illinois (the "Building") pursuant to that certain Lease dated December
___, 2000 (the "Lease"), the premises being more particularly described therein
(the "Premises").

     WHEREAS, Tenant desires to install a Satellite System;

     WHEREAS, Landlord is willing to permit such installation under the
following terms and conditions;

     NOW THEREFORE, in consideration of the mutual covenants and agreements
herein contained and for other good and valuable consideration, the receipt and
adequacy of which is hereby acknowledged by both parties, the parties agree as
follows:

1.   Definitions.  Licensor and Licensee agree that the respective terms as used
     -----------
herein shall, unless the context otherwise requires, have the following
meanings:

     "Building" - that certain office building located at 10 South LaSalle
Street, Chicago, Illinois 60603.

     "Antenna Site" - the applicable portions of the roof and equipment areas
of the Building designated by Licensor as the location for Site Equipment
(hereinafter defined). The Antenna Site is located in the area depicted on
Exhibit A attached hereto. Notwithstanding the foregoing, Licensor shall be
entitled to cause Licensee to relocate its Site Equipment from the Antenna Site
to a comparable space (a "Relocation Space") at any time upon reasonable notice
to Licensee (which notice shall not be given in excess of ninety (90) days prior
to such relocation) and Licensee agrees to relocate its Site Equipment at
Licensor's sole expense.

     "Site Manager" ___________________________, or any other entity designated
by Licensor to manage the Antenna Site during the term of this agreement.

     "Site Equipment" means any "receive only" communications equipment,
including satellite dishes, base stations, antenna(s), poles, dishes or masts,
cabling or wiring and accessories used therewith approved by Licensor for
installation, operation and maintenance on the Antenna Site,



                               EXHIBIT I - Page 1


and, as of the date of this Agreement, specifically includes those items on
Exhibit B attached hereto.

     Licensor and Licensee agree that capitalized terms defined elsewhere in
this Agreement shall, unless the context requires otherwise, have the meaning
there given. Licensor and Licensee shall act in good faith in the performance of
their respective obligations under this Agreement and, unless otherwise
expressly provided, shall not unreasonably withhold, and shall act as promptly
as is reasonably practicable under the circumstances in granting or denying, any
consent or approval required hereunder.

2.   Grant of License.  Licensor is the owner of the Building.  Licensee is a
     ----------------
tenant in the Building and occupies certain space in the Building pursuant to
the terms of a lease dated December _____, 2000 (the "Lease").  Licensee desires
to install Site Equipment on the Antenna Site.

     Subject to the terms and conditions of this Agreement, Licensor hereby
grants to Licensee a non-exclusive and non-assignable license (except to an
Affiliate of Tenant as defined in the Lease and/or as set forth below), for the
term of this Agreement (as such term may be extended or renewed), to install,
maintain and operate the Site Equipment, at the sole cost and expense of
Licensee, subject to Licensor's approval in all respects.  The Site Equipment
shall be solely for the use of Licensee. Licensee is specifically prohibited
from selling, reselling, or distributing services associated with the Site
Equipment to a third party.  Licensee acknowledges that Licensor has previously
granted rights to use the roof of the Building and risers to others and that the
rights granted to Licensee hereunder are expressly subject and subordinate to
the rights previously granted to others, whether or not such others have
exercised such rights as of the date of this Agreement and the Site Equipment
shall not interfere with any rooftop equipment now or hereafter installed
pursuant to any such rights. Licensor shall use reasonable efforts to prevent
any other rooftop equipment now or hereafter installed from interfering with the
Site Equipment.  Licensee further acknowledges that Licensor shall have the
right hereafter to grant similar or other rights to third parties to use the
roof or other space at the Building for antennae, antenna dish or other devices
for the reception or transmission of communications, data or other signals.

     Notwithstanding anything to the contrary contained in this Agreement,
Licensee's rights hereunder shall not be affected by any sublease of the
Premises entered into pursuant to the terms of the Lease.  In addition, the
right under this License shall be automatically transferred to an Assignee who
leases the entire Premises pursuant to the terms of this Lease and may be (at
Licnesor's discretion, be transferred to any Assignee pursuant to an Assignment
of the Lease for more than 25% of Licensee's then leased space in the Building,
but shall not be transferred to any Assignee pursuant to an Assignment of the
Lease for less than 25% of Licensee's then leased space in the Building.

3.   Plans.  Prior to the installation of the Site Equipment, Licensee shall
     -----
deliver to Licensor, for its review and approval, a set of plans and
specifications for the Site Equipment, which shall include, without limitation,
satellite dish design, size, floor and power load requirements, cabling
installations the means of affixing the satellite dish, and the means of
connecting the Site Equipment to the Building's electrical system and to the
Leased Premises. The satellite dish(es)



                               EXHIBIT I - Page 2


shall be receive-only and will have a non-penetrating mast mount design unless
required by Laws. Licensee shall deliver to Licensor such additional information
as may be requested by Licensor from time to time.

4.   Installation.  The Site Equipment and its installation, maintenance and
     ------------
operation, shall comply with all applicable laws, ordinances and regulations.
Prior to the installation and operation of the Site Equipment by Licensee,
Licensee shall, at its sole cost and expense, obtain all necessary licenses,
permits and approvals from all governmental agencies having jurisdiction.  The
Site Equipment shall be installed and maintained by contractors acceptable to
Licensor, in accordance with the approved plans and specifications and in
compliance with all requirements of Licensor.

5.   Interference.  If, in the sole judgment of Licensor, any electrical,
     ------------
electromagnetic, radio frequency or other interference shall result from the
operation of any of Licensee's Site Equipment, Licensee agrees that Licensor
may, at Licensor's option, shut down Licensee's equipment upon not less than
eight (8) business hours prior verbal notice to Licensee; provided, however that
if an emergency situation exists, which Licensor reasonably determines in its
sole discretion to be attributable to Licensee's equipment, Licensor may
immediately notify Licensee verbally, who shall act immediately to remedy the
emergency situation.  Should Licensee fail to so remedy said emergency
situation, Licensor may then act to shut down Licensee's Site Equipment.
Licensee shall indemnify and defend Licensor and hold it harmless from all
expenses, costs, damages, loss, claims or other liabilities arising out of said
shutdown.  Licensee agrees to cease operations (except for intermittent testing
on a schedule approved by Licensor) until the interference has been corrected to
the satisfaction of Licensor.  If such interference has not been corrected
within 60 days (which correction may include a change of Site Equipment in
accordance with the terms hereof), Licensor may, at its sole option, either
terminate this Agreement forthwith, or may require that Licensee immediately
remove from the Antenna Site the specific item of Site Equipment causing such
interference, in which latter case the Monthly License Fee shall be reduced by
the portion of the fee applicable to such equipment for the remainder of the
Term and all other terms and conditions of this Agreement shall remain in full
force and effect.

6.   Electricity.  Licensee shall be responsible for the cost of supplying
     -----------
electricity to the Site Equipment.  Electric usage shall be determined, at
Licensor's option, either (a) by meters installed by Licensor at Licensee's sole
cost and expense, or (b) by Licensor's reasonable estimate.  Licensee shall pay
Licensor monthly, within fifteen (15) days of being billed therefor, for all
electricity used in connection with the operation of the Site Equipment.

7.   Access.  Licensee or Licensee's agents shall have the right to enter those
     ------
parts of the Building outside the premises leased to Licensee under the Lease
which are reasonably necessary for the installation, maintenance and removal of
the Site Equipment in the event of an emergency (under such regulations as
Landlord prescribes for security purposes) or, after twenty-four (24) hours
advance notice to Licensor and the opportunity to have a representative present.

8.   Maintenance.  Licensee shall keep its Site Equipment, the Antenna Site and
     -----------
the areas immediately surrounding same neat and clean.  Licensee shall conduct
its business and control its agents, employees, invitees and visitors in such
manner as not to create any nuisance, or interfere with, annoy or disturb any
other licensee or tenant of the Building or Licensor in its operation of the




                               EXHIBIT I - Page 3


Building (including the Antenna Site).  Licensor shall have no obligation to
license, maintain, operate or safeguard the Site Equipment.

9.   Mechanic's Liens.  Licensee will not permit any lien or claim for lien of
     ----------------
any mechanic, laborer or supplier or any other lien to be filed against the
Antennae Site in accordance with the provisions of Section 9.02 of the Lease.

10.  License Fee.  During the term of this Agreement, Licensee shall pay to
     -----------
Licensor a license fee in the amount of _______________($____) per month.  The
license fee shall be (a) payable in advance on the first day of each and every
calendar month during the term of this Agreement, without deduction or set off;
and (b) prorated for any partial calendar month at the beginning or end of the
term based upon the number of days in the applicable month.  The pro rated
license fee for the partial month at the beginning of the term, if any, shall be
due and payable on the date of this Agreement. Licensor hereby agrees that the
license fee shall not exceed the average rates charged by office buildings
comparable to the Building in the Chicago West/Central Loop office market.

11.  Term.  The term of this Agreement shall begin on ___________, and shall end
     ----
on the earlier of (a) ________________, or (b) the date on which the Lease
terminates and shall be extended if the Term of the Lease is extended.

12.  Indemnification.  Licensee agrees to indemnify, defend and hold harmless
     ---------------
Licensor, its agents, employees and partners, from and against any and all
claims, suits, actions, liabilities, damages and/or expenses (including, without
limitation, attorney's fees and court costs) arising from or in connection (a)
the negligence or willful misconduct of Licensee, its agents, employees or
contractors; or (b) the exercise by Licensee of any of its rights under this
Agreement; or (c) the failure by Licensee to perform any of its obligations
under this Agreement.

13.  Insurance.  At all times that this License is in effect, Licensee, at its
     ---------
sole expense, shall obtain and keep in force insurance in accordance with the
provisions of Article Sixteen.

14.  Removal.  At the end of the term of this Agreement, or upon the earlier
     -------
termination of Licensee's rights hereunder, Licensee shall, at its sole cost and
expense, remove the Site Equipment in a manner satisfactory to Licensor, and
otherwise restore and repair the affected area of the roof and other parts of
the Building to the same condition as existed immediately prior to the
installation of the Site Equipment, normal wear and tear excepted.  Such
removal, restoration and repair shall be performed by a contractor, and in a
manner, acceptable to Licensor.  Notwithstanding the foregoing, Licensor may, at
its election, perform such removal, restoration and repair work for Licensee, in
which case Licensee shall, within fifteen (15) days of being billed therefor,
pay all costs and expenses incurred by Licensor in connection with such work or,
at Licensor's sole option, such Site Equipment shall be conclusively presumed to
have been abandoned by Licensee and may become the sole property of Licensor.

15.  Damage to Building.  Licensee shall be solely responsible for all costs
     ------------------
incurred by Licensor to repair any damage to the Building resulting from the
installation, operation, maintenance or removal of the Site Equipment.  Licensee
shall pay Licensor for such costs upon demand.



                               EXHIBIT I - Page 4


16.  Default and Licensor's Remedies.  The (i) failure of Licensee to perform
     -------------------------------
any of its covenants contained in this Agreement and the continuation of such
failure for five (5) days after notice from Licensor to Licensee (except with
                 ---
respect to the provisions of Section 5 of this Agreement)and/or (ii) Default by
Licensee of its obligations under the Lease shall constitute an event of default
hereunder, upon the occurrence of which, Licensor shall have, in addition to all
remedies available at law or equity, the right to terminate this Agreement and
remove the Site Equipment at the sole cost and expense of Licensee.

17.  No Assignment; Binding Agreement.  Licensee may not transfer, sublease, or
     --------------------------------
assign all or any part of its interest under this Agreement, except as set forth
in Section 2 above, without the prior written consent of Licensor.  Subject to
the preceding sentence, this Agreement shall be binding upon and inure to the
benefit of the parties hereto and their respective successors and assigns.

18.  Entire Agreement.  This Agreement represents the entire agreement between
     ----------------
the parties hereto and there are no collateral or oral agreements of
understandings.  This Agreement shall not be modified in any manner except by an
instrument in writing executed by the parties to this Agreement.

19.  Survival.  Any and all agreements set forth in this Agreement which, by its
     --------
or their nature, would reasonably be expected to be performed after the
expiration or earlier termination of this Agreement shall survive and be
enforceable after the expiration or earlier termination of this Agreement.

20.  Miscellaneous.
     -------------

     a.   Licensor makes no representations or warranties as to the suitability
or effectiveness of the Antenna Site, or as to any governmental requirements
applicable thereto.

     b.   Nothing in this Agreement shall be construed to make the roof and/or
Building systems part of the premises leased to Licensee pursuant to the Lease
for any purpose; nor shall this Agreement be construed to require any services
from Licensor with respect to the roof or Building systems by reason of the
existence of the Site Equipment.

     c.   Licensee  hereby indemnifies and holds Licensor harmless against any
loss, claim, expense or liability with respect to any commissions or brokerage
fees claimed on account of the execution and/or renewal of this Agreement due to
any action of Licensee

21.  Limitation of Licensor's Personal Liability.  In no event shall Licensor be
     -------------------------------------------
liable to Licensee for (a) any loss or damage that may be occasioned by or
through the acts or omissions of other tenants or licensees of the Building or
of any other persons whomsoever or (b) any incidental, indirect, special,
consequential, punitive or reliance damages of any nature whatsoever regardless
of the foreseeability thereof (including but not limited to, any claim from any
client, customer or patron for loss of service, lost profits or lost revenues)
arising under or in connection with this Agreement or the performance
thereunder, from any breach or partial breach or potential breach of the
provisions of this Agreement or arising out of any act or omission by Licensor,
its employees,



                               EXHIBIT I - Page 5


servants or agents whether based on breach of contract, breach of warranty,
negligence or any other theory of liability. Nothing contained in the
immediately preceding sentence shall ever be construed as creating liability in
excess of that existing at law or, in any event, increasing the liability of
Licensor under any theory or cause of action, however denominated, from that
existing at law. Further, the liability of Licensor to Licensee for (a) any
default by Licensor under the terms of this Agreement, (b) any tort liability of
Licensor to Licensee, or (c) in any other circumstance in which Licensor is
judicially determined to have some liability to Licensee, for whatever reason,
shall, in each such instance, be limited to the interest of Licensor in the
Building and Licensee agrees to look solely to Licensor's interest in the
Building for the recovery of any judgment from Licensor, it being intended that
Licensor shall never be personally liable for any judgment or deficiency.
Notwithstanding anything to the contrary herein, Licensee agrees, on its behalf
and on behalf of its successors and assigns, that any liability of Licensor with
respect to this Agreement shall never exceed the amount of $10,000,000 and
Licensee shall not be entitled to any judgement in excess of that amount.

22.  Notices.  All notices given in connection with this Agreement shall be in
     -------
writing and shall be addressed as set forth in the Lease.

     Any such notice shall be sufficient if sent by registered or certified
mail, return receipt requested, postage prepaid; by prepaid overnight delivery
service; or by personal delivery.  Either party may, by notice to the other
party given in accordance with this Section, change the address to which notice
is to be sent.

     IN WITNESS WHEREOF, the parties hereto have executed this Agreement as of
the date aforesaid.

LICENSEE: THE NORTHERN TRUST COMPANY

By:  ___________________________________
Its: ___________________________________

LICENSOR: METROPOLITAN LIFE INSURANCE COMPANY,

By:  ________________________________
Its: ________________________________





                               EXHIBIT I - Page 6


                                   Exhibit A

                                      To
                               Agreement Between
                      Metropolitan Life Insurance Company
                                      And
                          The Northern Trust Company.

                         Site Equipment Specifications





                               EXHIBIT I - Page 7


                                   Exhibit B

                                      To
                               Agreement Between
                      Metropolitan Life Insurance Company
                                      And
                          The Northern Trust Company

                                 Antenna Site




                               EXHIBIT I - Page 8