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:
Sandy sang a song for me.
answer:
acceptable


question:
Cynthia lunched.
answer:
acceptable


question:
Selina touched the horse's back.
answer:

acceptable