<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://ichef-1.bbci.co.uk/news/560/media/images/76382000/jpg/_76382828_13_credit-jforcada_weaners_on_a_rock.jpg>
<http://www.bbc.co.uk/news/science-environment-28372468>