Nasty is related to War. you are likely to find Bomb in/at/on War. Bomb can be used for Terrorism. 
Festival is a type of Social. Social is related to Subject. Subject is a synonym of Case. Case is related to Lawyer. 
Nasty <--RelatedTo--> War <--AtLocation-- Bomb --UsedFor--> Terrorism 
Festival --IsA--> Social <--RelatedTo--> Subject <--Synonym--> Case <--RelatedTo--> Lawyer 