Dave is blue. Dave is cold. Dave is nice. Dave is quiet. Dave is smart. Erin is blue. Erin is cold. Erin is nice. Erin is quiet. Erin is rough. Erin is round. Erin is smart. Blue things are rough. If something is nice and smart then it is quiet. If something is round then it is quiet. If Erin is nice then Erin is smart. All round, rough things are blue. All round, blue things are cold.
Dave is not blue.