Trailer is related to Poor. Poor is a different concept from Rich. Rich is related to Own. Own is related to Captain. 
you are likely to find Liquid in/at/on Can. Liquid is related to Sea. Sea is related to Mass. Mass is related to Prayer. 
Trailer <--RelatedTo--> Poor <--DistinctFrom--> Rich <--RelatedTo--> Own <--RelatedTo--> Captain 
Can <--AtLocation-- Liquid <--RelatedTo--> Sea <--RelatedTo--> Mass <--RelatedTo--> Prayer 