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 Input:
He's the happiest that I've ever seen him.

Ex Output:
acceptable


Ex Input:
Mary questioned Joe's desire to eat cabbage, but only after I had questioned Sally's desire to.

Ex Output:
unacceptable


Ex Input:
Susan whispered for me to come.

Ex Output:

acceptable