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:
to leave so soon would be inconvenience.

Ex Output:
acceptable


Ex Input:
I admired him a teacher.

Ex Output:
unacceptable


Ex Input:
Most guests will be offended if we don't invite some philosopher.

Ex Output:

acceptable