Question: What is the date of death of Robert B. Claytor's father?
Sentence (from "Robert B. Claytor"): (1912-1994), was president of the Southern Railway from 1967-1977, a United States Deputy Secretary of Defense and Secretary of the Navy from 1977-1979 under President Jimmy Carter, an acting U.S. Secretary of Transportation in the cabinet of President Carter in 1979, and president of Amtrak from 1982 until 1993.
Relevant evidence: No