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".

When can we register for graduation?
acceptable

Tom picked these grapes, and I washed these grapes, and Suzie will prepare these grapes.
acceptable

Who did you see and a picture of?

unacceptable