Trade is a synonym of Art. Art is related to Horse. Horse is related to Ranch. you are likely to find Shed in/at/on Ranch. 
you are likely to find People in/at/on Tank. you are likely to find Shark in/at/on Tank. you are likely to find Shark in/at/on Nightmare. 
Trade <--Synonym--> Art <--RelatedTo--> Horse <--RelatedTo--> Ranch <--AtLocation-- Shed 
People --AtLocation--> Tank <--AtLocation-- Shark --AtLocation--> Nightmare 