Bob is red. Charlie is rough. Erin is white. Harry is blue. If someone is rough and not red then they are not white. White, young people are quiet. Blue people are rough. If someone is furry and not blue then they are young. If Harry is quiet and Harry is not red then Harry is furry. If someone is rough and blue then they are furry. Rough, furry people are not young. If someone is not rough then they are quiet.
Erin is white.