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

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

[EX Q]: Which model was married to photographer David Bailey for 10 years, from 1975?
[EX A]: david bailey

[EX Q]: The film 'Don't Look Now' with Julie Christie and Donald Sutherland was adapted from a book by whom?
[EX A]:
don't look now