<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://ichef-1.bbci.co.uk/news/560/media/images/63307000/jpg/_63307551_694124main_watkins-3-pia16205-43_1024-768.jpg>
<http://www.bbc.com/news/science-environment-19840928>