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".

Fred kicked the ball over the fence.
acceptable

It is the folks up at corporate headquarters who the sooner you solve this problem, the more easily you'll satisfy.
unacceptable

Carla was shoveling the walk.

acceptable