Phone is related to Number. Number is related to Cost. 
Trait is a type of Attribute. Trait is related to Charm. Charm is a type of Flavor. Flavor is related to Plate. 
Phone <--RelatedTo--> Number <--RelatedTo--> Cost 
Attribute <--IsA-- Trait <--RelatedTo--> Charm --IsA--> Flavor <--RelatedTo--> Plate 