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.

[EX Q]: The strain season 4 episode 10 air date?
[EX A]: September 17, 2017

[EX Q]: Who wrote dont it make my brown eyes blue?
[EX A]: Richard Leigh

[EX Q]: How many times has spain been a republic?
[EX A]:
two very short periods