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: It was John's that I stole bike.

A: unacceptable
****
Q: Cynthia gobbled on the pizza .

A: unacceptable
****
Q: All the students who the papers which they submitted were lousy I'm not going to allow to register next term.

A:
acceptable
****