United States : leader_title : President of the United States | United States : leader_name : Barack Obama | United States : capital : Washington, D.C. | 1634: The Ram Rebellion : country : United States | United States : ethnic_group : African Americans
Barack Obama is the President of the United States where the capital city is Washington D.C. African American is one of the ethnic groups and the book 1634:The Ram Rebellion was written.