Battle is related to Republic. Republic is related to Official. Official is related to Organization. League is a type of Organization. 
Boil is related to Steam. Steam is a type of Cook. Cook is related to Oil. Oil is related to Essential. 
Battle <--RelatedTo--> Republic <--RelatedTo--> Official <--RelatedTo--> Organization <--IsA-- League 
Boil <--RelatedTo--> Steam --IsA--> Cook <--RelatedTo--> Oil <--RelatedTo--> Essential 