<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://pop.h-cdn.co/assets/cm/15/05/320x426/54caf0afbd5d3_-_amateur-astronomy-03-0712-lgn.jpg>
<http://www.popularmechanics.com/space/telescopes/g900/gear-up-backyard-stargazing-tech/>