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".

[Q]: Students objected to the teacher.
[A]: acceptable


[Q]: There jumped out of the box a little white rabbit.
[A]: acceptable


[Q]: I presented a solution to the problem yesterday.
[A]:
acceptable