input: United_States | leaderTitle | President_of_the_United_States United_States | leader | Barack_Obama United_States | capital | Washington,_D.C. 1634:_The_Ram_Rebellion | country | United_States United_States | ethnicGroup | African_Americans
target: 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.