<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://pop.h-cdn.co/assets/cm/15/05/54cacb63442a6_-_solar-cooker-0811-smn.jpg>
<http://www.popularmechanics.com/home/lawn-garden/how-to/a6822/how-to-build-a-three-person-hammock/>