Fear is related to Terrorism. Terrorism can cause/lead to War. you are likely to find Weapon in/at/on War. 
Idea is a type of Content. Content is related to Table. Table is made of Stone. Stone is related to Setting. 
Fear <--RelatedTo--> Terrorism --Causes--> War <--AtLocation-- Weapon 
Idea --IsA--> Content <--RelatedTo--> Table --MadeOf--> Stone <--RelatedTo--> Setting 