Question: The grand marshall of the 2005 Pepsi 400 was White House Chief of staff during what years?
Sentence (from "Donald Rumsfeld"): Rumsfeld served as the 13th Secretary of Defense from 1975 to 1977 under President Gerald Ford, and as the 21st Secretary of Defense from 2001 to 2006 under President George W. Bush.
Relevant evidence: No