TASK DEFINITION: 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.
PROBLEM: 'La donna e mobile' comes from which Verdi opera?

SOLUTION: rigoletto

PROBLEM: 'Hey Ya' was a 2003 hit for which US duo?

SOLUTION: outkast

PROBLEM: Marron glace is a confection of glazed sugar-coated what?

SOLUTION:
chestnut