Boil is related to Steam. Steam is a type of Cook. Cook is related to Oil. Oil is related to Essential. 
Spot is the opposite of Shade. Shade is related to Building. 
Boil <--RelatedTo--> Steam --IsA--> Cook <--RelatedTo--> Oil <--RelatedTo--> Essential 
Spot <--Antonym--> Shade <--RelatedTo--> Building 