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: Which Best Picture nominated movie tells the story of US soldier, 'Chris' Kyle?

Answer: chris kyle

Question: Which was the title of the 7th and final book in the Chronicles of Narnia by C.S. Lewis?

Answer: the chronicles of narnia

Question: What was the title of a 1996 American disaster film starring Helen Hunt and Bill Paxton as storm chasers?

Answer:
helen hunt