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

Ex Input:
Charlie Chaplin who died on Christmas Day in 1977, co founded which film studio along with Mary Pickford, Douglas Fairbanks?

Ex Output:
douglas fairbanks


Ex Input:
Which Dutchman managed both Newcastle and Chelsea in the 1990s?

Ex Output:
chelsea f.c.


Ex Input:
Who was burned at the stake, age 19, in Rouen in 1431?

Ex Output:

death by burning