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

[Q]: The film The Curious Case of Benjamin Button, starring Brad Pitt, is based on a short story by whom?
[A]: the curious case of benjamin button


[Q]: Who succeeded John Major as leader of the UK Conservative Party?
[A]: conservative party


[Q]: The theme tune to which TV series starring Don Johnson gave Jan Hammer his first UK chart success?
[A]:
don johnson