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:
I am not certain about whether he will go or not.

Ex Output:
acceptable


Ex Input:
They said that Tom would pay up, and pay up he did.

Ex Output:
acceptable


Ex Input:
Zeke ate and cooked the chili.

Ex Output:

acceptable