<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://pop.h-cdn.co/assets/cm/15/05/54ca94da213c9_-_meteors-1-470-1109-75571172.jpg>
<http://www.popularmechanics.com/space/telescopes/a4845/4337313/>