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:
The Hoover Dam is on the border of Arizona and which other state?

Ex Output:
nevada


Ex Input:
The Menaced Assassin is a work by which painter?

Ex Output:
rene magritte


Ex Input:
'Adallo', 'Fenena' and 'Abigaillon' are characters in which opera by Verdi?

Ex Output:

nabucco