Literature is related to Sure. Sure is the opposite of Certain. Certain is related to Opinion. Opinion is the opposite of Partial. 
Remark is a synonym of Perceive. Perceive is a synonym of Understand. Solve is a type of Understand. 
Literature <--RelatedTo--> Sure <--Antonym--> Certain <--RelatedTo--> Opinion <--Antonym--> Partial 
Remark <--Synonym--> Perceive <--Synonym--> Understand <--IsA-- Solve 