Person wants (to) Coffee. you are likely to find Water in/at/on Coffee. Water is related to Device. Weapon is a type of Device. 
Hide is related to Place. Place is related to Mouth. 
Person --Desires--> Coffee <--AtLocation-- Water <--RelatedTo--> Device <--IsA-- Weapon 
Hide <--RelatedTo--> Place <--RelatedTo--> Mouth 