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: Whether this is feasible hasn't yet been determined.
Example Output: acceptable

Example Input: John talked to a woman.
Example Output: acceptable

Example Input: We didn't keep a list of the names, but the President thanked every soldier who had fought in the Gulf War.
Example Output:
acceptable