Charlie is strong. Charlie is big. Dave is little. Dave is thin. Alan is wealthy. Bob is rough. Bob is dull. If someone is not high then they are rough. If someone is not poor then they are smart. If someone is wealthy then they are nice. If someone is nice and not bad then they are quiet. If someone is rough and not high then they are sad. All sad people are small. If someone is little and thin then they are bad. If someone is bad and not nice then they are dull. If someone is dull then they are young. If someone is smart then they are clever. All clever people are kind. All quiet people are old. 
Dave is young.