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".

Carol cut her thumb.
acceptable

The strong winds cleared the skies.
acceptable

When I read them and enjoyed them was not until I was perhaps twenty-five.

unacceptable