<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://ichef.bbci.co.uk/news/560/media/images/58389000/jpg/_58389582_e4020117-earth_at_time_of_pangea-spl.jpg>
<http://www.bbc.co.uk/news/science-environment-16934181>