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]: I know a boy mad at John.
[EX A]: acceptable

[EX Q]: He seems intelligent to study medicine.
[EX A]: acceptable

[EX Q]: You give every senator enough opportunity and he will succumb to corruption.
[EX A]:
unacceptable