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

[Q]: What nationality was the composer Bela Bartok?
[A]: bela bartok

[Q]: And Then There Were None?
[A]: and then there were none

[Q]: In which city is the largest football stadium in Germany, home to the 2010-2011 Bundesliga champions?
[A]:
bundesliga