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: I know which book Mag read, and which book Bob discussed after I had.

A: unacceptable
****
Q: Was the child in the school?

A: acceptable
****
Q: John ate a carrot and Mary did so a radish.

A:
unacceptable
****