<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/2013/03/28/130328220201_nelson_mandela_304x171_afp_nocredit.jpg>
<http://www.bbc.com/indonesia/dunia/2013/04/130401_kondisi_mandela_membaik.shtml>