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".

I went to the movies not to pick the shirts up.
unacceptable

The more Fred is obnoxious, the less you should pay attention to him.
acceptable

How brave he is!

acceptable