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]: On his finger sparkled a magnificent diamond.
[A]: acceptable


[Q]: John talked to a woman.
[A]: acceptable


[Q]: the book of poems and of fiction from Blackwell takes a very long time to read.
[A]:
acceptable