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: How many episodes in seal team season 1?

SOLUTION: 22

PROBLEM: Who plays sarah in cheaper by the dozen?

SOLUTION: Alyson Stoner

PROBLEM: When did united last win the champions league?

SOLUTION:
21 May 2008