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".

What did Bill claim that he read?
acceptable

Ray found the outcome frustrating.
acceptable

It is not certain that you'll marry any particular student.

acceptable