<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://ichef.bbci.co.uk/news/ws/560/amz/worldservice/live/assets/images/2013/05/14/130514105728_slimming_bacteria_304x171_spl_nocredit.jpg>
<http://bbchindi.com/hindi/science/2013/05/130514_obesity_bacteria_dp.shtml>