<http://schema.org/url>
<http://md1.libe.com/photo/435151-visitors-look-at-book-titles-as-they-visit-the-annual-paris-book-fair.jpg?modified_at=1340977104>
<http://next.liberation.fr/livres/2012/06/29/la-rentree-litteraire-en-646-romans_830078>