<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://ichef-1.bbci.co.uk/news/560/cpsprodpb/14059/production/_87090028_58caba82-71cc-4a2f-a065-d0a7e3de9799.jpg>
<http://www.bbc.com/news/science-environment-35568249>