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 film did Sharon Stone play the character 'Catherine Tramell?
Example Output: catherine tramell

Example Input: Austin is the state capitol of which US State?
Example Output: austin, texas

Example Input: Who played Gomez Addams in the 1993 film 'Addams Family Values'?
Example Output:
gomez addams