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".

Example Input: What proof that he has implicated have you found?
Example Output: acceptable

Example Input: The chickens seem fond with the farmer.
Example Output: unacceptable

Example Input: Bill and Mary washed himself.
Example Output:
unacceptable