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]: When can we register for graduation?
[EX A]: acceptable

[EX Q]: What do you think he is doing now?
[EX A]: acceptable

[EX Q]: This rock is light enough for Marcia to pick up.
[EX A]:
acceptable