Treasure is related to Find. Find is a type of Get. Get is the opposite of Put. 
Monster is a synonym of Devil. Devil is the opposite of Angel. Angel is related to Creature. Creature is related to Life. 
Treasure <--RelatedTo--> Find --IsA--> Get <--Antonym--> Put 
Monster <--Synonym--> Devil <--Antonym--> Angel <--RelatedTo--> Creature <--RelatedTo--> Life 