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: The bells were ringing for Chuck Berry when this song made it to No1. His first and only British No. 1. What song?

Answer: chuck berry


Question: Who was British Prime Minister from 1922-23, shortly before he died?

Answer: prime minister of the united kingdom


Question: Camelot in 1960 was the last Broadway musical of which famous duo?

Answer:
camelot