<http://schema.org/description>
"President Raymond Poincare (1860-1934) and others watching a flight at Villacoublay, Seine et Oise, north central France, towards the end of the First World War. Date: 25 June 1918"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.mediastorehouse.com/president-poincare-at-villacoublay-france-ww1/print/7184219.html>