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".

Ida hunted the woods for deer.
acceptable

Have in our class the kids arrived safely?
unacceptable

How was the plot discovered by the authorities?

acceptable