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

[EX Q]: Chris Martin is the lead singer with which band who had several hits in the 2000s?
[EX A]: chris martin

[EX Q]: Will you still be sending me a valentine is a line from which Beatles song?
[EX A]: the beatles

[EX Q]: Why did Bruno Richard Hauptmann, a German carpenter, make international news in 1936 when he was sentenced to death and executed for what became known as The Crime of the Century?
[EX A]:
richard hauptmann