<http://schema.org/headline>
"Popularit\u00E9: Jupp\u00E9 d\u00E9tr\u00F4ne Valls, Hollande stagne, Ayrault chute (YOUGOV)"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.huffingtonpost.fr/2014/03/13/popularite-juppe-detrone-valls-hollande-stagne-ayrault-chute/>