Platform is a type of Structure. Platform is a type of Document. Confession is a type of Document. 
Go is related to Steady. Steady is similar to Sure. Sure is a synonym of Reliable. Reliable is derived from Rely. 
Structure <--IsA-- Platform --IsA--> Document <--IsA-- Confession 
Go <--RelatedTo--> Steady <--SimilarTo--> Sure <--Synonym--> Reliable --DerivedFrom--> Rely 