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

Ex Input:
Which of these was the title of Bobby Darin's first million selling single?

Ex Output:
bobby darin


Ex Input:
Who was the only British medal winner at the 2010 Winter Olympics?

Ex Output:
2010 winter olympics


Ex Input:
In the 2009 Tour de France which British Olympic medallist finished 4th overall?

Ex Output:

2009 tour de france