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".

John can to kick the ball.
unacceptable

Which book he read the book was that one.
unacceptable

Dorothy needs her for her skills.

acceptable