Premise: Valentin Vitalyevich Lebedev (Russian: Валентин Витальевич Лебедев ; born April 14, 1942 in Moscow) was a Soviet cosmonaut who made two flights into space. His stay aboard the Space Station Salyut 7 with Anatoly Berezovoy in 1982, which lasted 211 days, was recorded in the Guinness Book of Records.
Hypothesis: Anatoly Berezovoy died on April 14, 2012 in Moscow.