<http://schema.org/dateCreated>
"2011-04-19T11:51:41+0200"^^<http://schema.org/Date>
<http://www.lemonde.fr/planete/article/2011/04/19/des-produits-cancerigenes-utilises-pour-l-extraction-de-gaz-de-schiste-aux-etats-unis_1509800_3244.html>