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