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".

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

Output: acceptable


Input: Consider Input: I have eaten the beef waffles.

Output: acceptable


Input: Consider Input: A man who saw the fly in the food didn't eat dinner.


Output: acceptable