<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://ichef.bbci.co.uk/news/ws/560/amz/worldservice/live/assets/images/2013/03/14/130314103924_pope_francis_512x288_ap.jpg>
<http://bbcvietnamese.com/vietnamese/world/2013/03/130313_pope_francis.shtml>