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 wonders what Mary bought.

Ex Output:
acceptable


Ex Input:
People from Tucson think very highly of themselves.

Ex Output:
acceptable


Ex Input:
Why she told him is unclear.

Ex Output:

acceptable