<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://ichef.bbci.co.uk/news/560/media/images/69803000/jpg/_69803439_c0119324-climate_change_space_mirrors,_artwork-spl.jpg>
<http://www.bbc.com/news/science-environment-24033772>