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

Q: What did Edwin Land invent because of his daughters' wish for instant and 'snappy' results?

A: edwin h. land
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Q: What did Banting and Best discover in 1921?

A: charles herbert best
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Q: What Beatles song was also recorded by Peter Sellars?

A:
the beatles
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