Tree is a type of Chase. Tree is related to Large. Large is related to Mass. Mass is related to Crowd. 
Place is a type of Race. Race is related to Game. Game is related to Competitive. 
Chase <--IsA-- Tree <--RelatedTo--> Large <--RelatedTo--> Mass <--RelatedTo--> Crowd 
Place --IsA--> Race <--RelatedTo--> Game <--RelatedTo--> Competitive 