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".

Brutus murdered Julius Caesar.
acceptable

John thinks that most depictions of himself are wrong.
acceptable

The thief stole the painting for Mr. Smith.

acceptable