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: Feb 15, 1564 saw the birth of what famed Italian physicist, mathematician, astronomer, and philosopher, who discovered the first 4 moons of Jupiter?

Answer: astronomer


Question: According to folklore, what was the name of the monster slain by 'Beowulf'?

Answer: beowulf


Question: Adam Levine is the lead singer of which US pop rock band?

Answer:
pop rock