TASK DEFINITION: In this task, you're given an open-domain question. Your task is to provide an answer to the given question. There is only one unique answer for each question. Your answer should be short, and refer to an entity, date, number, etc. Do not put your answer in the context of a sentence.
PROBLEM: When did the civil war end in sierra leone?

SOLUTION: 18 January 2002

PROBLEM: When did the washington capitals last win a stanley cup?

SOLUTION: June 7, 2018

PROBLEM: Where are the most hops grown in the world?

SOLUTION:
united States