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

[Q]: Come Clean was the debut album by which 2000s band?
[A]: come clean


[Q]: What is the official language of the Dominican Republic?
[A]: dominican republic


[Q]: 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?
[A]:
john mayer