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

Example Input: Come Clean was the debut album by which 2000s band?
Example Output: come clean

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: 'All My Loving' and 'Can't Buy Me Love', featured in which Beatles film?
Example Output:
all my loving