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