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 man who ordered ice cream said the pudding would be tasty.
[A]: acceptable


[Q]: Fred threw the ball under the porch.
[A]: acceptable


[Q]: We convinced him that the operation is safe.
[A]:
acceptable