Developer is a type of Person. Person wants (to) Moral. Moral is a type of Meaning. 
Expose is the opposite of Cover. Bind is a type of Cover. Bind is the opposite of Rescue. 
Developer --IsA--> Person --Desires--> Moral --IsA--> Meaning 
Expose <--Antonym--> Cover <--IsA-- Bind <--Antonym--> Rescue 