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: The five `` soundscape '' pieces gave a festive air to Park Square.
Example Output: acceptable

Example Input: Sorry, I gave last week.
Example Output: acceptable

Example Input: Lee voted for Bill because his father told him to.
Example Output:
acceptable