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 lead singer of acdc died?
[EX A]: February 19, 1980

[EX Q]: When did the first season of greys anatomy air?
[EX A]: March 27, 2005

[EX Q]: Which parliament passed the act that contains the australian constitution?
[EX A]:
Parliament of the United Kingdom