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".

Brown equipped a camera at Jones.
unacceptable

She knocked himself on the head with a zucchini.
unacceptable

A book was sent to Louis.

acceptable