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: On which island is Nassau, the capital of the Bahamas?

Answer: nassau


Question: What was the computer's name in 2001: A Space Odyssey?

Answer: 2001: a space odyssey


Question: The brutal treatment of Billy Hayes was the inspiration what film?

Answer:
billy hayes