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".

Q: While Rusty might leave in order to please Mag, he won't his father.

A: unacceptable
****
Q: The meeting began at 4 P.M.

A: acceptable
****
Q: The boy whose loud playing of the piano I disliked was a student.

A:
acceptable
****