Popularity is a type of State. District is a type of State. Possession is a type of District. Possession is related to Trade. 
Dog wants (to) Dig. Dog have Nose. Nose is related to Hearing. Hearing is a type of Session. 
Popularity --IsA--> State <--IsA-- District <--IsA-- Possession <--RelatedTo--> Trade 
Dig <--Desires-- Dog --HasA--> Nose <--RelatedTo--> Hearing --IsA--> Session 