Activity would make you want to Judge. Measure is a type of Judge. Measure is related to Population. Population is related to Pop. 
Ankle is related to Heel. Heel is a type of Hit. 
Activity --CausesDesire--> Judge <--IsA-- Measure <--RelatedTo--> Population <--RelatedTo--> Pop 
Ankle <--RelatedTo--> Heel --IsA--> Hit 