Bob is young. Bob is round. Bob is blue. Fred is young. Fred is red. Fred is nice. Gary is blue. Gary is big. Harry is round. Harry is cold. If someone is green and young and blue then they are big. If someone is young and nice then they are big. If someone is rough then they are blue. If someone is blue and round then they are green. If someone is rough and blue then they are green. If someone is young and nice then they are rough.
Fred is not green.