Bob is not green. Bob is red. Bob is rough. Charlie is green. Charlie is round. Gary is red. Gary is rough. If someone is nice and round then they are furry. Furry, rough people are round. All green, furry people are rough. If someone is not red then they are not nice. Rough, white people are not round. If Charlie is not nice and Charlie is not furry then Charlie is rough. If someone is not furry then they are round. If someone is red and not furry then they are rough.
Bob is not furry.