Question: When did the husband of Nina Petrovna Khrushcheva die?
Sentence (from "Nikita Khrushchev"): Nikita Sergeyevich Khrushchev (15 April [O.S. 3 April] 1894  – 11 September 1971) was a Soviet politician who led the Soviet Union during part of the Cold War as the First Secretary of the Communist Party of the Soviet Union from 1953 to 1964, and as Chairman of the Council of Ministers, or Premier, from 1958 to 1964.
Relevant evidence: Yes