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".

Q: Pat promised Leslie to be aggressive.

A: acceptable
****
Q: Tom ran the soles off his shoes.

A: acceptable
****
Q: Which city does Fred think that you believe that John lives in?

A:
acceptable
****