<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://ghk.h-cdn.co/assets/cm/15/11/5500461444bfa-guacamole-4-ghv-325-45799263.jpg>
<http://www.goodhousekeeping.com/food-recipes/cooking/tips/g1992/easy-guacamole-recipe/>