<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://ichef-1.bbci.co.uk/news/560/media/images/62670000/jpg/_62670089_683206main_juno20120830-43_full.jpg>
<http://www.bbc.co.uk/news/science-environment-19477618>