<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://gioit.h-cdn.co/assets/16/26/980x490/landscape-1467204744-saldi-i-love-shopping.jpg>
<http://www.gioia.it/idee/trend/consigli/a978/saldi-9-consigli-per-evitare-fregature/>