Given an trivia question precisely answer the question with a word/phrase/name. External resources such as Wikipedia could be used to obtain the facts.

Ex Input:
Three of the Galilean moons of Jupiter are Io, Europa and Callisto. Which is the fourth?

Ex Output:
ganymede


Ex Input:
Convict Magwitch appears in which novel by Charles Dickens?

Ex Output:
great expectations


Ex Input:
Who directed the 2008 film 'The Hurt Locker'?

Ex Output:

kathryn bigelow