Charlie is blue. Charlie is smart. Erin is green. Fiona is furry. Fiona is smart. Gary is green. Gary is red. All smart, furry people are rough. Red people are smart. All green people are blue. All blue people are furry. All green, furry people are red. If someone is green and not smart then they are furry. If someone is smart and not blue then they are rough. If someone is not rough then they are young.
Fiona is not rough.