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: Bob proved that this set is recursive.

Answer: acceptable


Question: Paula swatted the cloth on the fly.

Answer: unacceptable


Question: It never occurred to Harvey that I might want to leave because he is insensitive to other people's desires.

Answer:
acceptable