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 BBC current affairs programme, the longest-running in the world, is 60 years old this year ?

SOLUTION: bbc

PROBLEM: In which Indian city is Eden Gardens, the second largest test cricket ground in the world?

SOLUTION: eden gardens

PROBLEM: Captain Corelli's mandolin is a book a film set in which country?

SOLUTION:
captain corelli's mandolin