Historic is related to Constitution. Constitution is related to American. American is related to President. President is related to Government. 
Square is related to Bread. Bread is related to Carbohydrate. Carbohydrate is similar to Protein. 
Historic <--RelatedTo--> Constitution <--RelatedTo--> American <--RelatedTo--> President <--RelatedTo--> Government 
Square <--RelatedTo--> Bread <--RelatedTo--> Carbohydrate <--SimilarTo--> Protein 