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:
What sport is featured in the musical The Beautiful Game by Andrew Lloyd Webber and Ben Elton?

Ex Output:
the beautiful game


Ex Input:
Dyce Airport is in which British city?

Ex Output:

aberdeen airport