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: He never achieved anything, didn't he?
Example Output: unacceptable

Example Input: Handsome though everyone expects me to try to force Bill to make Mom agree that Dick is, I'm still going to Marry Herman.
Example Output: acceptable

Example Input: I noticed his car in the driveway last night, your friend from Boston.
Example Output:
acceptable