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".

Nixon's behavior gave an idea for a book to every journalist living in New York.
acceptable

The meeting began at 4 P.M.
acceptable

They ignored the suggestion that Lee made.

acceptable