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:
Snail fever is caused by organisms of which genus?

Ex Output:
schistosoma


Ex Input:
Whose opera La gazza ladra premiered in 1817?

Ex Output:
gioachino rossini


Ex Input:
Who created Facebook in 2004?

Ex Output:

mark zuckerberg