<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://pop.h-cdn.co/assets/cm/15/06/54cfbed9335ca_-_diy-valentine-7-470-0209.jpg>
<http://www.popularmechanics.com/home/how-to-plans/how-to/a3940/4303199/>