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".

There is a hole in the rug which Toby bought in Boston.
acceptable

Lopez says that he has done more than simply give a fresh coat of paint to the site.
acceptable

A student must work hard.

acceptable