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 musical instrument was associated with Jacqueline du Pre?
answer:
cello

question:
Who wrote The Fall of the House of Usher?
answer:
edgar allan poe