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

Example Input: Cassandra, Grizabella and Skimbleshanks are all characters in which Andrew Lloyd Webber musical?
Example Output: andrew lloyd webber

Example Input: Who was the CBS News anchor-man known as 'the man Americans most trust'?
Example Output: news presenter

Example Input: What 2009 science fiction disaster film starring John Cusack, Chiwetel Ejiofor, Amanda Peet, Oliver Platt, Danny Glover, Thandie Newton, and Woody Harrelson references Mayanism and the Mesoamerican Long Count calendar, depicting a series of Doomsday scenarios that plunge the world into chaos?
Example Output:
danny glover