<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://ichef-1.bbci.co.uk/news/560/media/images/50991000/jpg/_50991856_b245009-lake_vostok_micro-organism,_sem-spl.jpg>
<http://www.bbc.com/news/science-environment-12275979>