<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://ghk.h-cdn.co/assets/cm/15/11/550045396f706-knife-techniques-dice-6-ghv-325-94370457.jpg>
<http://www.goodhousekeeping.com/food-recipes/cooking/tips/g1946/knife-technique-dice/?src=shelter_footer>