<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://pop.h-cdn.co/assets/cm/15/05/54cad0e083c9c_-_super-storms-tornado-0811-smn.jpg>
<http://www.popularmechanics.com/science/environment/a7042/how-to-protect-the-us-from-floods-6327785/>