Southeast is similar to Northeast. Northeast is the opposite of Southwest. Southwest is a type of Airline. 
Slam is a type of Close. Slam is related to Hang. Hang is related to Criminal. Criminal is the opposite of Policeman. 
Southeast <--SimilarTo--> Northeast <--Antonym--> Southwest --IsA--> Airline 
Close <--IsA-- Slam <--RelatedTo--> Hang <--RelatedTo--> Criminal <--Antonym--> Policeman 