Question: Dark Side of the Moon is a French mockumentary featuring a guest appearance by  an American retired politician and businessman who served as the 21st Secretary of Defense under who?
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: Yes