<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://ichef.bbci.co.uk/news/560/media/images/76913000/jpg/_76913515_deimos2-sanfrancisco(us)-2014-06-24d.jpg>
<http://www.bbc.com/news/science-environment-28772742>