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: I sent a book to Louis.

Output: acceptable


Input: Consider Input: John locked Fido in the garage and Mary did so in the room.

Output: unacceptable


Input: Consider Input: Susanne gave the minivan to George.


Output: acceptable