Revolution is related to Turn. Turn is related to Description. 
Pretend is a type of Claim. Contend is a type of Claim. Contend is a synonym of Dispute. Controversy is a type of Dispute. 
Revolution <--RelatedTo--> Turn <--RelatedTo--> Description 
Pretend --IsA--> Claim <--IsA-- Contend <--Synonym--> Dispute <--IsA-- Controversy 