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

Ex Input:
Which two brothers had hits with Cathy's Clown and Wake Up Little Susie?

Ex Output:
cathy's clown


Ex Input:
Which European country has the Cupon as its currency?

Ex Output:
moldovan cupon


Ex Input:
Who was the President of Argentina at the time of the Falklands invasion in 1982 ?

Ex Output:

argentina