<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://ghk.h-cdn.co/assets/cm/15/11/980x1276/54ff6c5fcbcd1-ghk-0614-food-the-so-cal-burger-s2-40445549.jpg>
<http://www.goodhousekeeping.com/food-recipes/g1308/burger-toppings/>