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".

A boy did not laugh.
acceptable

I admired him a teacher.
unacceptable

Any student in Mary's class happened to vote.

unacceptable