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

[EX Q]: What is the capital of the U.S. state of Connecticut?
[EX A]: connecticut

[EX Q]: In which wars did the battles of Towton and Barnet take place?
[EX A]: battle of barnet

[EX Q]: Which online bookstore was originally called Cadabra.com?
[EX A]:
amazon.com