<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://ichef-1.bbci.co.uk/news/560/media/images/50566000/jpg/_50566629_b234068-mrsa_resistant_staphylococcus_bacteria-spl.jpg>
<http://www.bbc.co.uk/news/health-13632369>