Erin is cold. Erin is furry. Erin is red. Erin is round. Erin is young. Fiona is cold. Fiona is furry. Fiona is red. Fiona is round. Fiona is smart. If someone is smart and cold then they are young. If someone is round and young then they are cold. All young, furry people are nice. Nice, smart people are cold. Cold, red people are round. All smart people are round.
Fiona is not young.