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]: Volunteers praise easily.
[A]: unacceptable


[Q]: Ron wanted to wear a tuxedo to the party, but Caspar couldn't decide whether to.
[A]: unacceptable


[Q]: I need Sally to be there.
[A]:
acceptable