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: Carla slid those books across the table.

Output: acceptable


Input: Consider Input: That's the kindest answer that I ever heard.

Output: acceptable


Input: Consider Input: The fact that no candidate was elected shows that he was inadequate.


Output: unacceptable