<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://pop.h-cdn.co/assets/cm/15/05/54cb08386ed46_-_48-hours-tech-01-0213-de.jpg>
<http://www.popularmechanics.com/technology/how-to/a8714/10-tech-projects-one-weekend/>