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:
Lee solved the puzzle how Kim solved it.

Ex Output:
unacceptable


Ex Input:
Sam didn't pick those packages up until it had stopped raining which are to be mailed tomorrow.

Ex Output:
unacceptable


Ex Input:
John disappeared Bill.

Ex Output:

unacceptable