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".

He's the happiest that I've ever seen him.
acceptable

Rosie loves magazine ads.
acceptable

Fred offered the ball under Molly.

unacceptable