School is a type of Organization. School can be used for Shelter. Shelter is related to Cage. 
Heart is a type of Symbol. Symbol is related to Question. Question is related to Be. Consist is a type of Be. 
Organization <--IsA-- School --UsedFor--> Shelter <--RelatedTo--> Cage 
Heart --IsA--> Symbol <--RelatedTo--> Question <--RelatedTo--> Be <--IsA-- Consist 