Class is related to High. High is the opposite of Short. Short is a synonym of Light. Highlight is a type of Light. 
Argue is a synonym of Fence. Fence is a type of Receive. Receive is a type of Convert. 
Class <--RelatedTo--> High <--Antonym--> Short <--Synonym--> Light <--IsA-- Highlight 
Argue <--Synonym--> Fence --IsA--> Receive --IsA--> Convert 