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