[['United States', 'LEADER_NAME', 'Barack Obama'], ['Alcatraz Versus the Evil Librarians', 'COUNTRY', 'United States'], ['United States', 'ETHNIC_GROUP', 'Native Americans in the United States']]
The united States, under the leadership of Barack Obama, is home to ethnic groups such as Native Americans and is where the book Alcatraz Versus the Evil Librarians came from.