<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://digitalspyuk.cdnds.net/11/47/618_showbiz_star_snaps_bieber_usher.jpg>
<http://www.digitalspy.com/showbiz/news/a485462/usher-on-justin-bieber-trouble-i-am-hoping-for-the-best/>