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

Q: Who directed the film `Back To The Future`?

A: back to the future
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Q: Dora Maar au Chat and The Weeping Woman are both portraits by which artist of his lover?

A: dora maar au chat
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Q: Which actor is the narrator in the film `Blade Runner`?

A:
blade runner
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