Engineering is a type of Room. Room is related to Furniture. 
Secondary is the opposite of Main. Main is related to Road. Road is a synonym of Route. you are likely to find Route in/at/on Map. 
Engineering --IsA--> Room <--RelatedTo--> Furniture 
Secondary <--Antonym--> Main <--RelatedTo--> Road <--Synonym--> Route --AtLocation--> Map 