Champion is a type of Rival. Champion is a type of Defender. Guard is a type of Defender. Guard is a different concept from Police. 
Building is created by Architect. Building is related to Timber. 
Rival <--IsA-- Champion --IsA--> Defender <--IsA-- Guard <--DistinctFrom--> Police 
Architect <--CreatedBy-- Building <--RelatedTo--> Timber 