<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://ghk.h-cdn.co/assets/cm/15/11/320x320/54fed8bba0782-citrus-salad-recipe-ghk0512-ekkdpc-xl.jpg>
<http://www.goodhousekeeping.com/health/diet-nutrition/g335/get-more-food-nutrients/>