<http://schema.org/description>
"Aerial photograph (German) of a battle area on the western front during the First World War. Date: 24 September 1917"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.mediastorehouse.com/aerial-photograph-of-battle-area-western-front-ww1/print/7185381.html>