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".

Which book he read the book was that one.
unacceptable

On which table and under which flower pot did John put the keys?
acceptable

He figured something out.

acceptable