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: Ellen conferred for Helen to come.

Output: unacceptable


Input: Consider Input: Stephen believed it to be easy to please Kim.

Output: acceptable


Input: Consider Input: Tom placed it under the table.


Output: acceptable