Deliver is related to Carry. Carry is related to Transport. Transport is related to Blood. 
Population is related to Demographic. Demographic is related to Age. Age is related to Annual. 
Deliver <--RelatedTo--> Carry <--RelatedTo--> Transport <--RelatedTo--> Blood 
Population <--RelatedTo--> Demographic <--RelatedTo--> Age <--RelatedTo--> Annual 