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

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

The song Don't Rain On My Parade features in which musical?
don't rain on my parade

British sportswoman Charlotte Cooper, born in 1870, was famous in which sport?

charlotte cooper