<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://pop.h-cdn.co/assets/cm/15/05/54cad51d807f5_-_sierranevada-101811-mdn.jpg>
<http://www.popularmechanics.com/space/a7377/is-this-nasa-document-saving-or-killing-manned-private-spaceflight-6518496/?click=pm_latest>