Pole is related to Snow. you are likely to find Snow in/at/on Roof. Roof is related to Warehouse. Warehouse is related to Library. 
Northwest is part of West. West is related to Pioneer. Pioneer is a type of Introduce. Introduce is related to Known. 
Pole <--RelatedTo--> Snow --AtLocation--> Roof <--RelatedTo--> Warehouse <--RelatedTo--> Library 
Northwest --PartOf--> West <--RelatedTo--> Pioneer --IsA--> Introduce <--RelatedTo--> Known 