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:
The manner which Jack disappeared in was creepy.

Ex Output:
unacceptable


Ex Input:
The ship's sinking to collect the insurance was very devious.

Ex Output:
unacceptable


Ex Input:
Every student, who wears socks, is a swinger.

Ex Output:

unacceptable