instruction:
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:
If he has to wait, John gets angry.
answer:
acceptable


question:
Willy is taller than that Bill is is generally believed.
answer:
unacceptable


question:
That Betsy won the batting crown is not surprising, but that Peter didn't know she did is surprising.
answer:

acceptable