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]: Have in our class the kids arrived safely?
[A]: unacceptable


[Q]: The tuna must have been eaten.
[A]: acceptable


[Q]: We have many graduate students but this year the graduate director met with any student in the graduate program individually to discuss their progress.
[A]:
unacceptable