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: I was surprised that he stole the watch, in as far as that was a daring thing to do.
Example Output: acceptable

Example Input: Sally started running down the street, but only after José started.
Example Output: unacceptable

Example Input: It was then when we all went to bed.
Example Output:
acceptable