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".

[EX Q]: John gave Mary, and Joan presented to Fred, books which looked.
[EX A]: acceptable

[EX Q]: A big green insect flew into the soup.
[EX A]: acceptable

[EX Q]: I presented a solution yesterday.
[EX A]:
acceptable