Northwest is similar to Southwest. Southwest is a type of Airline. Song is a type of Airline. Song is related to Art. 
Dawn is a type of Hour. Hour is related to Sorry. Sorry is related to Dog. you are likely to find Dog in/at/on House. 
Northwest <--SimilarTo--> Southwest --IsA--> Airline <--IsA-- Song <--RelatedTo--> Art 
Dawn --IsA--> Hour <--RelatedTo--> Sorry <--RelatedTo--> Dog --AtLocation--> House 