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

[Q]: Who choreographed the ballets Swan Lake and Don Quixote, among others?
[A]: don quixote


[Q]: In which city were the 2002 Winter Olympic Games held?
[A]: 2002 winter olympics


[Q]: Dave Gilmore and Roger Waters were in which rock group?
[A]:
roger waters