Anne is blue. Anne is furry. Anne is rough. Anne is smart. Anne is white. Anne is young. Bob is blue. Bob is furry. Dave is furry. Erin is blue. Erin is furry. Erin is rough. All blue things are young. All smart, blue things are white. All round, furry things are rough. If something is furry and young then it is round. If Dave is round and Dave is furry then Dave is young. If something is young and rough then it is smart. Blue things are furry. All young, furry things are round. Smart things are round.
Bob is not white.