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

Ex Input:
On which date do we celebrate 'Boxing Day'?

Ex Output:
boxing day


Ex Input:
In which 1960's TV series did Clarence the cross-eyed lion appear?

Ex Output:
clarence, the cross-eyed lion


Ex Input:
What nationality was Che Guevara?

Ex Output:

che guevara