title: Georgios Papadopoulos
context: After democracy was restored in 1974, during the period of metapolitefsi ("regime change"), Papadopoulos and his cohorts were tried for high treason, mutiny, torture, and other crimes and misdemeanors. On 23 August 1975, he and several others were found guilty and were sentenced to death, which was later commuted to life imprisonment. Papadopoulos remained in prison, rejecting an amnesty offer that required that he acknowledge his past record and express remorse, until his death on 27 June 1999 at age 80 in a hospital in Athens, where he had been treated for cancer since 1996.[31]
question: How did Georgios Papadopoulos die?
answers: cancer