Given a factoid/trivia type question, generate the topic of the question. The topic is the entity the question talks about.
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Question: In which film did Sharon Stone play the character 'Catherine Tramell?

Answer: catherine tramell


Question: Who wrote the novels About A Boy, How To Be Good and High Fidelity?

Answer: how to be good


Question: Which famous person in history did Mel Gibson play in the film `Braveheart`?

Answer:
braveheart