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 umpire fell off it.
[A]: acceptable


[Q]: to leave so soon would be inconvenience.
[A]: acceptable


[Q]: They said that Tom would pay up, and pay up it is well-known that he did.
[A]:
acceptable