<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://pop.h-cdn.co/assets/cm/15/05/54cb5f40c3b1d_-_tb_0005hihiba-lead.jpg>
<http://www.popularmechanics.com/home/how-to-plans/how-to/a11683/1275791/>