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".

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

How much harder has it rained, when you see a faster flow in the river?
acceptable

Celia brushed her hair.

acceptable