Given a factoid/trivia type question, generate the topic of the question. The topic is the entity the question talks about.

[Q]: Forty hours before he committed suicide in 1945 Adolf Hitler married whom?
[A]: adolf hitler


[Q]: On November 22, 1986, which boxer became the youngest WBC Heavyweight champion, at age 20 years, 4 months, when he scored a TKO over Trevor Berbick in the second round?
[A]: boxing


[Q]: Which stagework, the most performed of all Arthur Miller's plays, was inspired by the so-called McCarthy witchhunts in 1950's America?
[A]:
arthur miller