Freedom is a type of Book. Freedom is the opposite of Fate. Fatal is derived from Fate. Aids can be Fatal. 
Economic is related to Depression. Depression can be Devastating. Devastating is related to War. War can be Expensive. 
Book <--IsA-- Freedom <--Antonym--> Fate <--DerivedFrom-- Fatal <--HasProperty-- Aids 
Economic <--RelatedTo--> Depression --HasProperty--> Devastating <--RelatedTo--> War --HasProperty--> Expensive 