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 branch dropped its apple free.

Ex Output:
acceptable


Ex Input:
The cages which we donated wire for the convicts to build with are strong.

Ex Output:
unacceptable


Ex Input:
The hardest that all the power lines were down and it snowed was last January 12th.

Ex Output:

unacceptable