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]: We persuaded them to examine themselves.
[A]: acceptable


[Q]: The question of whether John met Mary worries the people who support.
[A]: acceptable


[Q]: The more carefully he knows a man that worded the letter the safer he'll be.
[A]:
unacceptable