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]: When did the last episode of seinfeld air?
[EX A]: May 14, 1998

[EX Q]: When does lucifer season 3 episode 20 air?
[EX A]: April 16, 2018

[EX Q]: The stage of life at which both sexes become capable of reproduction is?
[EX A]:
sexual maturity