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: Jean is likely to leave.

Answer: acceptable


Question: This is the sort of problem which the sooner you solve the more easily you'll satisfy the folks up at corporate headquarters.

Answer: acceptable


Question: A proof was given that the claim that John had lied had been made.

Answer:
acceptable