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]: Sally believes that herself is brilliant.
[EX A]: unacceptable

[EX Q]: Volunteers praise easily.
[EX A]: unacceptable

[EX Q]: If John wants to succeed in corporate life, he has to know the rules of the game.
[EX A]:
acceptable