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: Ann copied the manuscript, but she didn't finish it.
Example Output: acceptable

Example Input: What table will he put the chair between some table and?
Example Output: unacceptable

Example Input: The horizon was appeared on by a pirate ship.
Example Output:
unacceptable