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: Stephen believed the cat to be out of the bag.

Output: acceptable


Input: Consider Input: Tom ordered bacon, and Dick lettuce, and I think that Harry tomatoes.

Output: unacceptable


Input: Consider Input: The roof of the building is leaking.


Output: acceptable