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

[Q]: Who was the only boxer to win a world title without ever having a manager?
[A]: boxing


[Q]: Created by Alex Raymond, this futuristic character first appeared in 1934. Who is he?
[A]: alex raymond


[Q]: Who played Batman in the 1997 film `Batman and Robin`?
[A]:
batman