<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://gioit.h-cdn.co/assets/16/31/980x490/landscape-1470220124-olimpiadi-2016-zika-2.jpg>
<http://www.gioia.it/benessere/salute/consigli/a1404/olimpiadi-2016-zika-virus/>