Minister is related to Political. Political is related to Power. Power is related to Knowledge. you are likely to find Knowledge in/at/on Library. 
Body is related to Pool. Pool can be used for Race. Race is a synonym of People. Riot is made of People. 
Minister <--RelatedTo--> Political <--RelatedTo--> Power <--RelatedTo--> Knowledge --AtLocation--> Library 
Body <--RelatedTo--> Pool --UsedFor--> Race <--Synonym--> People <--MadeOf-- Riot 