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]: Each child should have a daily glass of milk.
[A]: acceptable


[Q]: John must do not have eaten.
[A]: unacceptable


[Q]: The company in which they have invested left.
[A]:
acceptable