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]: Janet broke at the vase.
[A]: unacceptable


[Q]: How do you wonder which problem to solve?
[A]: unacceptable


[Q]: Their expectations will be kept up with.
[A]:
acceptable