<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://ichef-1.bbci.co.uk/news/ws/560/amz/worldservice/live/assets/images/2013/06/25/130625060233_ls_lowry_512x288_lowry_nocredit.jpg>
<http://www.bbc.com/indonesia/majalah/2013/06/130625_seni.shtml>