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

Ex Input:
Miss Rosa Dartle is a character in which Charles Dickens novel?

Ex Output:
james steerforth


Ex Input:
Charles Bingley was a character in what classic Jane Austen novel?

Ex Output:
charles bingley


Ex Input:
In the novel `20,000 Leagues Under The Sea` what was the name of the captain of the submarine Nautilus?

Ex Output:

twenty thousand leagues under the sea