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: An oak tree will grow from that acorn.

Output: acceptable


Input: Consider Input: I didn't realize that it had rained and some crops had been destroyed.

Output: acceptable


Input: Consider Input: Frank hopes to persuade Harry to make the cook wash the dishes.


Output: acceptable