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 truck rumbled into the driveway.

Ex Output:
acceptable


Ex Input:
Brutus murdered Julius Caesar.

Ex Output:
acceptable


Ex Input:
To delay the march and to go ahead with it have been argued by different people at different times.

Ex Output:

acceptable