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:
What was the title of Elton John's first solo No. I hit?

Ex Output:
sacrifice

Ex Input:
Of the five Marx brothers who appeared on film, who was the oldest ?

Ex Output:
chico

Ex Input:
Which journey by James Lovell, John Swigert and Fred Haise in 1970 almost ended in disaster?

Ex Output:
apollo 13