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