Platform is related to Cake. Cake is related to Wheat. Wheat is related to Whole. 
Box is related to Article. Article is created by Writer. Contributor is a type of Writer. 
Platform <--RelatedTo--> Cake <--RelatedTo--> Wheat <--RelatedTo--> Whole 
Box <--RelatedTo--> Article --CreatedBy--> Writer <--IsA-- Contributor 