<http://schema.org/thumbnailUrl>
<http://i.huffpost.com/gen/1215317/images/s-LUCA-PARMITANO-small.jpg>
<http://www.huffingtonpost.it/2013/06/27/-luca-parmitano-la-luna-al-tramonto-vista-dallo-spazio_n_3510896.html>