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 was the name of the 1963 Disney live action movie, where 3 animals ventured to get themselves home?
Example Output: walt disney pictures

Example Input: Who writes the Discworld novels?
Example Output:
discworld