<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://ichef-1.bbci.co.uk/news/560/media/images/62045000/jpg/_62045580_msl20100913_d2010_0910_d6107-full.jpg>
<http://www.bbc.co.uk/news/science-environment-19078494>