Erin is white. Fiona is smart. Gary is not white. Smart, nice people are blue. All quiet, white people are not blue. Rough, cold people are not nice. If Fiona is quiet and Fiona is blue then Fiona is rough. If someone is not white then they are cold. If someone is not blue then they are smart. If someone is smart and not blue then they are rough. If Erin is not nice and Erin is not rough then Erin is not white.
Erin is quiet.