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

Ex Input:
The Greeks called her Athena, what was the Roman name for this Goddess?

Ex Output:
athena

Ex Input:
With what sport is Dennis Compton associated?

Ex Output:
denis compton

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

Ex Output:
bbc