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

Ex Input:
Which female gymnast won Gold Medals in the Balance Beam and Floor Exercise events in the 1972 Summer Olympics?

Ex Output:
1972 summer olympics

Ex Input:
Who wrote '20,000 Leagues Under The Sea'?

Ex Output:
20,000 leagues under the sea

Ex Input:
The Spanish La Liga football club Villarreal share their nickname with which Beatles song?

Ex Output:
the beatles