<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://ichef-1.bbci.co.uk/news/560/media/images/63653000/jpg/_63653227_c1a41dfd-772e-48b1-8446-3ebaf58f5c22.jpg>
<http://www.bbc.co.uk/news/science-environment-20041344>