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".

Input: Consider Input: Brown equipped a camera at Jones.

Output: unacceptable


Input: Consider Input: The boy whose guardian's we elected employer president betrayed us.

Output: unacceptable


Input: Consider Input: John told us which book we should review.


Output: acceptable