Popular is related to Crowd. Crowd is related to Shopping. Shopping requires Money. Money is related to Banker. 
Aids is a form of Aid. Aid is a type of River. you are likely to find River in/at/on Continent. 
Popular <--RelatedTo--> Crowd <--RelatedTo--> Shopping --HasPrerequisite--> Money <--RelatedTo--> Banker 
Aids --FormOf--> Aid --IsA--> River --AtLocation--> Continent 