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: The one who broke the window was Mr. Kim.

A: acceptable
****
Q: What time did you arrive at?

A:
unacceptable
****