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

Q: Aragon and Castile joined to form which country?

A: aragon
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Q: Which Noble prize-winning novelist is best known for 'And Quiet Flows the Don?

A: and quiet flows the don
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Q: At auction in 2015, $1.2m was paid for Don McLean's original handrwitten lyrics for which 1971 big hit song?

A:
don mclean
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