Discover is the opposite of Hide. Earth is a type of Hide. Earth is related to Large. 
Fence is a synonym of Argue. Argue is a synonym of Row. Row is a type of Array. Array is a type of Arrangement. 
Discover <--Antonym--> Hide <--IsA-- Earth <--RelatedTo--> Large 
Fence <--Synonym--> Argue <--Synonym--> Row --IsA--> Array --IsA--> Arrangement 