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

[Q]: Aldebaran is the brightest star in which constellation?
[A]: aldebaran


[Q]: Who was the only British medal winner at the 2010 Winter Olympics?
[A]: 2010 winter olympics


[Q]: What was Britney Spears' first number one, in 1999?
[A]:
britney spears