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:
My mother baked me a birthday cake.

Ex Output:
acceptable


Ex Input:
Sheila married that tall a man.

Ex Output:
acceptable


Ex Input:
The coat of the panther is dark black.

Ex Output:

acceptable