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 more food Mary knows a man that eats the poorer she gets.
unacceptable

Ron wanted to wear a tuxedo to the party, but Caspar couldn't decide whether to.
unacceptable

That the sun was out is obvious.

acceptable