Sentence: The United States are inhabited by Americans and the ethnic group of African Americans. 1634 The Ram Rebellion was written in the country where President Barack Obama is the leader.

What structured data could we extract from this sentence?
United States, leaderTitle, President of the United States; United States, leader, Barack Obama; United States, demonym, Americans; 1634: The Ram Rebellion, country, United States; United States, ethnicGroup, African Americans