Harry is big. Harry is strong. Fiona is thin. Fiona is small. Dave is kind. Erin is dull. Erin is bad. If someone is not high then they are dull. If someone is not sad then they are quiet. If someone is kind then they are wealthy. If someone is wealthy and not rough then they are smart. If someone is dull and not high then they are poor. If someone is thin and small then they are rough. If someone is rough and not wealthy then they are bad. All quiet people are nice. 
Dave is smart.