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

Example Input: Which Bob Dylan song begins You got a lotta nerveTo say you are my friend. When I was down, You just stood there grinning?
Example Output: bob dylan

Example Input: What is the name of the astromech droid companion of Anakin Skywalker, Luke Skywalker and Obi-Wan Kenobi in the Star Wars franchise?
Example Output: droid

Example Input: Ben Collins was 'outed' in January 2009 as which mysterious TV character?
Example Output:
ben collins