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

Example Input: Who was the only child vampire in Anne Rice`s novels?
Example Output: anne rice

Example Input: In the film `Breakfast at Tiffanys`, what is the name of Audrey Hepburn`s character`s cat ?
Example Output: breakfast at tiffany's

Example Input: Alfred Wegener was the first to publish the hypothesis that these had somehow 'moved' apart but he was unable to provide a convincing explanation for the physical processes which might have caused it. What are we talking about?
Example Output:
alfred wegener