SCHEDULE 13G
EXHIBIT A
RELEVANT SUBSIDIARIES AND MEMBERS OF FILING GROUP
PARENT HOLDING COMPANIES OR CONTROL PERSONS:
Warren E. Buffett (an individual who may be deemed to control Berkshire Hathaway Inc.)
Berkshire Hathaway Inc.
GEICO Corporation
INSURANCE COMPANIES AS DEFINED IN SECTION 3(a)(19) OF THE ACT:
National Indemnity Company
Government Employees Insurance Company
GEICO Indemnity Company
EMPLOYEE BENEFIT PLANS IN ACCORDANCE WITH ยง 240.13d-1-(b)(1)(ii)(F)
The Buffalo News Drivers/Distributors Pension Plan
BNSF Master Retirement Trust
Lubrizol Master Trust Pension
Buffalo News Mechanical Pension Plan
Flight Safety International Inc. Retirement Income Plan
Fruit of the Loom Pension Trust
GEICO Corporation Pension Plan Trust
Johns Manville Corporation Master Pension Trust
Dexter Pension Plan
Scott Fetzer Collective Investment Trust
Acme Brick Company Pension Plan
Buffalo News Editorial Pension Plan
Buffalo News Office Pension Plan
Justin Brands Inc. Pension Plan
