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

[EX Q]: Which poem by Keats and novel by Disraeli both have the same title?
[EX A]: john keats

[EX Q]: Who did boxer Floyd Patterson defeat to regain the Heavyweight Championship in June 1960?
[EX A]: boxing

[EX Q]: 'Best of Both Worlds' by Miley Cyrus is the theme song to which US tv show?
[EX A]:
the best of both worlds