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 in Mary's class is working on negative polarity.
[A]: acceptable


[Q]: the enemy's destruction of the city was horrific.
[A]: acceptable


[Q]: Jennifer craned.
[A]:
unacceptable