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.

[Q]: 'La donna e mobile' comes from which Verdi opera?
[A]: rigoletto


[Q]: What is the name of the actor who plays Harry Potter in all the films?
[A]: daniel radcliffe


[Q]: Who had a smash hit in the 1950s with I Walk the Line?
[A]:
johnny cash