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:
He established his innocence with the letter.
answer:
acceptable


question:
The little boy hit the child with a toy.
answer:
acceptable


question:
Who did you give pictures of to friends of?
answer:

acceptable