Republican is similar to Green. Green is related to Grape. Grape is related to Bunch. Bunch is related to Whole. 
Vitamin is a type of Medicine. Vitamin is a type of Nutrient. Carbohydrate is a type of Nutrient. 
Republican <--SimilarTo--> Green <--RelatedTo--> Grape <--RelatedTo--> Bunch <--RelatedTo--> Whole 
Medicine <--IsA-- Vitamin --IsA--> Nutrient <--IsA-- Carbohydrate 