Sentence: 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.

What data can be extracted from this sentence?
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