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