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]: John knows whose book Mary bought and Tom talked.
[EX A]: unacceptable

[EX Q]: John suddenly got off the bus.
[EX A]: acceptable

[EX Q]: He's the happiest that I've ever seen him drunk and.
[EX A]:
unacceptable