Diet is related to Carbohydrate. Carbohydrate is a type of Nutrient. Nutrient is a type of Substance. Substance is a synonym of Material. 
North is related to Snow. Snow is related to Salt. Salt is related to Common. Common is the opposite of Elite. 
Diet <--RelatedTo--> Carbohydrate --IsA--> Nutrient --IsA--> Substance <--Synonym--> Material 
North <--RelatedTo--> Snow <--RelatedTo--> Salt <--RelatedTo--> Common <--Antonym--> Elite 