instruction:
Given a factoid/trivia type question, generate the topic of the question. The topic is the entity the question talks about.
question:
Austin is the state capitol of which US State?
answer:
austin, texas


question:
Who was re-elected Prime Minister of Canada in May 2011?
answer:
prime minister of canada


question:
Who had a 2011 US No.1 with Don't Wanna Go Home?
answer:

don't wanna go home