<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://ichef.bbci.co.uk/news/560/media/images/75055000/jpg/_75055409_m0500057-tem_of_rabies_viruses-spl.jpg>
<http://www.bbc.com/news/science-environment-27538721>