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]: That's the kindest answer that I ever heard.
[EX A]: acceptable

[EX Q]: You can do it, but you better not.
[EX A]: acceptable

[EX Q]: We gave every senator enough opportunity and, sure enough, he succumbed to corruption.
[EX A]:
unacceptable