Erin is green. Erin is quiet. Erin is smart. If Erin is nice then Erin is quiet. If Erin is not cold then Erin is rough. If Erin is rough and Erin is not blue then Erin is nice. Rough things are quiet. If something is not nice and not blue then it is green. If something is not rough and not quiet then it is not cold.
Erin is not blue.