Bob is not furry. Bob is red. Bob is rough. Bob is round. Fiona is big. Fiona is red. Fiona is round. Fiona is young. Gary is big. Gary is not furry. Gary is green. Gary is round. If someone is furry and not round then they are red. If Gary is not rough then Gary is green. All furry, red people are not green. Furry people are green. If someone is not big then they are green. If someone is rough and not furry then they are not young.
Gary is not red.