<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://ghk.h-cdn.co/assets/cm/15/11/768x516/54ff128624a5f-ja-henckels-international-classic-8-inch-chefs-knife-xl.jpg>
<http://www.goodhousekeeping.com/cooking-tools/best-kitchen-knives/g646/best-kitchen-cutlery/>