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: What proof that he has implicated have you found?

A: acceptable
****
Q: I wonder what Mary offered to him.

A: acceptable
****
Q: John is taller than Pete is.

A:
acceptable
****