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

Answer: how to be good


Question: Which 1970s musical film starred Angela Lansbury as a trainee witch?

Answer: angela lansbury


Question: US-born Adulyadej Bhumibol became king of which Asian country?

Answer:
bhumibol adulyadej