<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://ichef.bbci.co.uk/news/560/media/images/61570000/jpg/_61570009_e6bbe3c4-e988-4882-acba-5ac704a11b17.jpg>
<http://www.bbc.co.uk/news/science-environment-18839302>