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".

Which packages didn't Sam pick up which are to be mailed tomorrow until it had stopped raining?
unacceptable

The tool that Jones got was more helpful than the one that Smith got.
acceptable

The horse broke Penny in the shin.

unacceptable