<http://schema.org/description>
"Two great battles were fought on the Western Front in 1916\u2014at Verdun (February 21-July 11) and the Somme (July 1-November 18)."^^<http://www.w3.org/2001/XMLSchema#string>
<http://history.howstuffworks.com/world-war-i/world-war-i-in-1916.htm>