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".

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

Robert thinks that student should eat asparagus.
acceptable

John saw more horses than Bill saw or Pete talked to.

acceptable