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

Ex Input:
Pirate Edward Teach was better known by what nickname?

Ex Output:
edward teach


Ex Input:
The plays 'The Barber of Seville' and 'Marriage of Figaro' were written by whom?

Ex Output:
the marriage of figaro


Ex Input:
Who wrote the original French fairytale, Cinderella, on which the ballet was based?

Ex Output:

cinderella