United States : capital : Washington, D.C. | United States : leader_title : President of the United States | United States : leader_name : John Roberts | United States : leader_name : Joe Biden | 250 Delaware Avenue : location : United States
Washington DC is the capital of the United States where the country's leader is known as the President. Joe Biden is a leader in the US and the Chief Justice of the USA is John Roberts. The country is the location of 250 Delaware Avenue.