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:
Brown equipped a camera at Jones.

Ex Output:
unacceptable


Ex Input:
That the march should go ahead and that it should be cancelled have been argued by different people at different times.

Ex Output:
acceptable


Ex Input:
The fact that he was sick for days, we talked about.

Ex Output:

acceptable