Question: What is the cause of death of composer of film Eugene Onegin (1959 Film)?
Sentence (from "Pyotr Ilyich Tchaikovsky"): Contributory factors included his early separation from his mother for boarding school followed by his mother's early death, the death of his close friend and colleague Nikolai Rubinstein, and the collapse of the one enduring relationship of his adult life, which was his 13-year association with the wealthy widow Nadezhda von Meck who was his patron even though they never actually met each other.
Relevant evidence: No