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".

The oil separated from the vinegar.
acceptable

John can to kick the ball.
unacceptable

That that it would confuse the guards for Herschel to throw a fit was obvious is not true.

acceptable