Dave is cold. Dave is quiet. Erin is not cold. Erin is white. Harry is cold. Harry is white. Harry is young. If Erin is young then Erin is round. If someone is cold and furry then they are rough. If someone is rough and not cold then they are young. If Harry is white and Harry is quiet then Harry is furry. Round people are not white. White, cold people are quiet. If someone is young and not rough then they are quiet. If someone is not round then they are quiet.
Erin is rough.