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:
John loves his puppy.

Ex Output:
acceptable


Ex Input:
It is the folks up at corporate headquarters who the sooner you solve this problem, the more easily you'll satisfy.

Ex Output:
unacceptable


Ex Input:
It is a wooden desk.

Ex Output:

acceptable