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".

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

Tony bent the rod against the table.
acceptable

Susan bought some flowers for her birthday.

acceptable