World is the Earth. World is related to Trade. Export is a type of Trade. 
Chief is related to Ruling. Ruling is related to King. King is related to Mate. Lion wants (to) Mate. 
Earth <--DefinedAs-- World <--RelatedTo--> Trade <--IsA-- Export 
Chief <--RelatedTo--> Ruling <--RelatedTo--> King <--RelatedTo--> Mate <--Desires-- Lion 