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".
--------
Question: We proved conclusively Smith to be the thief.

Answer: unacceptable


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

Answer: acceptable


Question: If you take a dry match and strike it, it lights.

Answer:
acceptable