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: When did you get back and what did you bring me?
Example Output: acceptable

Example Input: The boy's loud playing of the piano drove everyone crazy.
Example Output: acceptable

Example Input: Which man did you talk to?
Example Output:
acceptable