<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://pop.h-cdn.co/assets/cm/15/06/640x430/54d11fb932917_-_reemerging-diseases-06-1011-xln-54557091.jpg>
<http://www.popularmechanics.com/science/health/g650/6-diseases-back-from-the-dead/>