<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://pop.h-cdn.co/assets/cm/15/06/480x322/54d11fb8c07e1_-_reemerging-diseases-04-1011-xln-82383101.jpg>
<http://www.popularmechanics.com/science/health/g650/6-diseases-back-from-the-dead/>