<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://ichef.bbci.co.uk/news/560/media/images/64742000/jpg/_64742855_152_-_camp_panarama_with_full_onion_tanks.jpg>
<http://www.bbc.com/news/science-environment-20817560>