TASK DEFINITION: Given a factoid/trivia type question, generate the topic of the question. The topic is the entity the question talks about.
PROBLEM: Which European country has the Cupon as its currency?

SOLUTION: moldovan cupon

PROBLEM: What was the last silent film in which Chaplin's little tramp appeared?

SOLUTION: chaplin

PROBLEM: Who wrote the words for Auld Lang Syne?

SOLUTION:
auld lang syne