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

Ex Input:
According to folklore, what was the name of the monster slain by 'Beowulf'?

Ex Output:
beowulf

Ex Input:
Which English comedian has joined Amanda Holden as one of the judges on the current series of 'Britain's Got Talent'?

Ex Output:
britain's got talent

Ex Input:
What is the title of late actor Charlie Chaplin's last completed film, launched in the UK in 1967?

Ex Output:
charlie chaplin