Given a factoid/trivia type question, generate the topic of the question. The topic is the entity the question talks about.
One example: Who was the first American President?
Solution is here: president of the united states
Explanation: The question talks about the president of the USA.

Now, solve this: Which song by John Mayer, written for the Rob Reiner film The Bucket List, is his highest charting single to date, and won Best Male Pop Vocal Performance at the Grammy Awards in 2009?
Solution:
john mayer