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: Mary's happy with her work, and John's with his children.
Example Output: acceptable

Example Input: He threw the letter into the wastebasket.
Example Output: acceptable

Example Input: They wondered what she did yesterday.
Example Output:
acceptable