<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://ghk.h-cdn.co/assets/cm/15/11/160x87/54fdfed82293a-tomato-basil-fresh-mozzarella-pizza-hp.jpg>
<http://www.goodhousekeeping.com/food-recipes/g823/pizza-recipes/?click=gtks>