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

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

Output: merritt wever


Input: Consider Input: Who succeeded Jon Pertwee as Doctor Who?

Output: doctor who


Input: Consider Input: Which famous actor played the Mock Turtle in the 1933 film `Alice In Wonderland`?


Output: mock turtle


