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".

John took Bill to be a fool.
acceptable

Toothbrush the is blue.
unacceptable

My brother meets few Americans in Vienna.

acceptable