You're given a sentence and your task is to classify whether the sentence is acceptable or not. Any sentence which is grammatically correct, has a naturalistic text, is written by a native speaker and which minimizes superfluous content is acceptable, otherwise unacceptable. If the sentence is acceptable then write "acceptable", otherwise "unacceptable".

[Q]: Every student answered any question.
[A]: unacceptable


[Q]: The papers removed from the safe have not been found.
[A]: acceptable


[Q]: A review of this article came out yesterday.
[A]:
acceptable