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 1960's TV series did Clarence the cross-eyed lion appear?
Example Output: clarence, the cross-eyed lion

Example Input: Cilantro is the leaf of which herb?
Example Output: cilantro

Example Input: Who does John Wayne play in the 1960 film 'The Alamo'?
Example Output:
the alamo