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".

[EX Q]: Which problem do you wonder whether John said that Mary solved?
[EX A]: unacceptable

[EX Q]: The girl who the by works in a skyscraper and in a quonset but has a dimple on her nose.
[EX A]: unacceptable

[EX Q]: A gun which I had cleaned went off.
[EX A]:
acceptable