instruction:
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.
question:
The Guarani is the principal unit of currency of which country?
answer:
paraguay


question:
Which 2001 musical film based on the Orphean myth and on Giuseppe Verdi's opera La Traviata stars Ewan McGregor and Nicole Kidman?
answer:
moulin rouge!


question:
Jazz musician Jelly Roll Morton played which instrument?
answer:

piano