Bob is blue. Bob is green. Fiona is green. Gary is big. Harry is big. Harry is blue. Harry is young. Big people are green. All furry, young people are quiet. Green people are blue. If someone is furry and white then they are young. All furry, green people are blue. If Harry is quiet and Harry is furry then Harry is blue. Young, furry people are quiet. Furry people are white. Blue, green people are furry.
Gary is not young.