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]: To behave oneself in public is expected.
[EX A]: acceptable

[EX Q]: The angrier that Sue gets, the more that Fred admires her.
[EX A]: acceptable

[EX Q]: John seems to be a fountain in the park.
[EX A]:
unacceptable