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: Who played uncle arthur in the comedy company?

SOLUTION: Glenn Robbins

PROBLEM: When did star spangled banner became the national anthem?

SOLUTION: March 3, 1931

PROBLEM: Who wrote just haven't met you yet?

SOLUTION:
Michael Buble, Alan Chang, Amy Foster-Gillies