Bob is not big. Bob is cold. Charlie is not quiet. Charlie is young. Erin is blue. Erin is quiet. Erin is rough. If someone is quiet then they are young. If someone is young and cold then they are rough. If someone is quiet then they are blue. All rough, white people are young. If Erin is young then Erin is quiet. If someone is not quiet and not white then they are not rough.
Erin is not blue.