<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://ichef.bbci.co.uk/news/ws/560/amz/worldservice/live/assets/images/2013/01/31/130131233700_beyonce.jpg>
<http://www.bbc.com/indonesia/bahasa_inggris/2013/02/130204_witn_beyonce.shtml>