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.

[Q]: When did arches national park become a national park?
[A]: November 12, 1971


[Q]: Who was the presiding officer at the constitutional convention?
[A]: George Washington


[Q]: Who win the dada saheb falke award in 2018?
[A]:
Amitabh Bachchan