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]: The meeting began at 4 P.M.
[A]: acceptable


[Q]: An oak tree will grow from that acorn.
[A]: acceptable


[Q]: Susan found any book she had been looking for at Borders.
[A]:
unacceptable