<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://ichef-1.bbci.co.uk/news/560/cpsprodpb/61BD/production/_87412052_0609016_03-a4-at-144-dpi-1.jpg>
<http://www.bbc.com/news/science-environment-35158891>