Bob is furry. Bob is rough. Bob is young. Erin is big. Erin is furry. Erin is green. Erin is red. Erin is rough. Erin is smart. Erin is young. Harry is big. Harry is furry. Harry is green. Harry is red. Harry is rough. Harry is young. If someone is smart then they are green. All smart, furry people are rough. Young, smart people are red. If someone is big then they are green. If someone is rough and young then they are smart. If someone is red then they are young.
Bob is not rough.