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

Example Input: In which wars did the battles of Towton and Barnet take place?
Example Output: battle of barnet

Example Input: In which book of the Bible are the Ten Commandments first mentioned?
Example Output: bible

Example Input: Zoey Barkow, Kevin Peyton, Eddie Walzer and Fitch Cooper are all characters in which US television series?
Example Output:
merritt wever