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 does arrow season 6 air on tv?
[A]: October 12, 2017


[Q]: Who won great british bake off season 4?
[A]: Frances Elizabeth Quinn


[Q]: Where do rocks become sediment inside the earth or on the surface of the earth?
[A]:
surface of the earth