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".

Bill married Kathy.
acceptable

He threw the letter into the wastebasket.
acceptable

Once Janet left, Fred became much crazier.

acceptable