<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://pop.h-cdn.co/assets/cm/15/06/480x360/54cfd4a89d9ce_-_firepits-01-1013-de.jpg>
<http://www.popularmechanics.com/adventure/outdoors/g1331/5-portable-fire-pits-for-a-campfire-on-the-go/>