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]: What time frame does stranger things take place?
[EX A]: 1980s

[EX Q]: Who ordered the translation of the old testament into greek?
[EX A]: Ptolemy II Philadelphus

[EX Q]: What does ark mean in ark survival evolved?
[EX A]:
The game's world