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".

Steve pelted the squirrels with acorns.
acceptable

the pencil with that he is writing broke.
unacceptable

What John did to the wall was hit it.

acceptable