<http://schema.org/description>
"Blackfeet Indians, a confederacy of three tribes of the northern plains\u2014the Siksika, or Blackfeet proper; the Bloods, or Kainah; and the Piegans."^^<http://www.w3.org/2001/XMLSchema#string>
<http://history.howstuffworks.com/native-american-history/blackfeet-indians.htm>