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

Q: In March 1992 'Deeply Dippy' was the only number one hit for which group?

A: deeply dippy
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Q: Physics. What is the SI unit for amount of substance?

A: amount of substance
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Q: Which Beatle led the way across the zebra crossing on the Abbey Road album cover?

A:
the beatles
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