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".

[EX Q]: People from Tucson think very highly of themselves.
[EX A]: acceptable

[EX Q]: The eggs and the cream mixed.
[EX A]: acceptable

[EX Q]: Susan begged Bill to let her sing in the concert.
[EX A]:
acceptable