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