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


[Q]: Students objected to the teacher.
[A]: acceptable


[Q]: Proud of him I've never been.
[A]:
acceptable