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: While Truman doesn't want to visit every city, he does Barcelona.
Example Output: acceptable

Example Input: The farm finally reached John after much litigation.
Example Output: unacceptable

Example Input: My brother and few Americans meet in Vienna.
Example Output:
unacceptable