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

Sally is such a fool as people think.
unacceptable

A lot of snow melted on the streets of Chicago.

acceptable