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".

Ex Input:
The critique of Plato's Republic was written from a contemporary point of view.

Ex Output:
acceptable


Ex Input:
They said that Tom would pay up, and pay up he did.

Ex Output:
acceptable


Ex Input:
Which problem do you wonder whether John said that Mary solved?

Ex Output:

unacceptable