<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://pop.h-cdn.co/assets/cm/15/05/54c87e6bcfbda_-_canon-powershot-sd1000-0707.jpg>
<http://www.popularmechanics.com/technology/gadgets/how-to/a1857/4218937/>