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: No one believes that he is a fool.

Output: acceptable


Input: Consider Input: Penny rowed across the lake.

Output: acceptable


Input: Consider Input: Willy is taller than Bill by as much as it is believed that Joe is taller than Dan.


Output: acceptable