instruction:
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".
question:
We proved conclusively Smith to be the thief.
answer:
unacceptable


question:
Marlene dressed herself.
answer:
acceptable


question:
Buffy couldn't do 100 push ups and somebody laughed.
answer:

acceptable