The bear is big. The bear is blue. The bear is green. The bear is rough. The bear is round. All blue, green things are round. All green things are rough. If the bear is rough then the bear is green. All rough things are blue. If something is not round and not big then it is green. If something is blue and not round then it is green. If something is not blue then it is green. If something is rough and not blue then it is green.
The bear is not green.