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

[Q]: Which American actor and singer has joined Amanda Holden as one of the judges on the current series of 'Britain's Got Talent'?
[A]: britain's got talent


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


[Q]: Columbus, Ohio resident Dave Thomas opened the first of what restaurant chain on November 15, 1969?
[A]:
dave thomas