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".

Who did you wonder saw Kim?
unacceptable

The student protected him.
acceptable

Strings have been pulled many times to get students into that university.

acceptable