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".

Ray found the outcome frustrating.
acceptable

Edward's help, you can rely on.
acceptable

The two boys looked up the high stairs.

acceptable