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