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

[EX Q]: Which comedian starred in the ABC sitcom Chicken Soup?
[EX A]: chicken soup

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

[EX Q]: What is the capital of the American state of Colorado?
[EX A]:
colorado