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

[EX Q]: Formerly known as Sky Dome, Rogers Centre is home to what American League baseball team, the only MLB team located outside the United States?
[EX A]: american league

[EX Q]: Which Beatles song was also recorded by Peter Sellers?
[EX A]: the beatles

[EX Q]: Who was the drummer with the 1970's rock band 'Led Zepplin'?
[EX A]:
drummer