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

Q: Which `brothers` had a number one hit in May 1958 with `All I Have To Do Is Dream`?

A: all i have to do is dream
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Q: Baltusrol Course lies in which US state?

A: baltusrol golf club
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Q: Which is the largest continent on Earth?

A:
earth
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