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:
Nixon's behavior gave an idea for a book to every journalist living in New York.

Ex Output:
acceptable


Ex Input:
John believed that he is honest.

Ex Output:
acceptable


Ex Input:
The hat which I believed that Otto was wearing is red.

Ex Output:

acceptable