<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://pop.h-cdn.co/assets/cm/15/06/54cfd24476f02_-_saucer-secrets-10-1012-de.jpg>
<http://www.popularmechanics.com/military/research/g946/saucer-full-of-secrets-pics-from-declassified-military-docs/>