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: Who won the Women's Singles at the 2015 Australian Open Tennis Championships?

Answer: the championships, wimbledon


Question: Who conducted interviews lying on a bed in the UK television show 'The Big Breakfast'?

Answer:
the big breakfast