Literature is related to University. you are likely to find Politics in/at/on University. Politics is a synonym of Government. 
Economics is related to Demand. Demand is related to Claim. Claim is related to Assert. Assert is a synonym of Maintain. 
Literature <--RelatedTo--> University <--AtLocation-- Politics <--Synonym--> Government 
Economics <--RelatedTo--> Demand <--RelatedTo--> Claim <--RelatedTo--> Assert <--Synonym--> Maintain 