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".

Q: Every man lifted the table.

A: acceptable
****
Q: With their teacher, the kids have arrived safely, hasn't he?

A: unacceptable
****
Q: No student, who scored 80 or more in the exam, was ever failed.

A:
unacceptable
****