<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://ghk.h-cdn.co/assets/cm/15/11/980x768/54fe8a5644c71-4-pizzadoughcalzone-de.jpg>
<http://www.goodhousekeeping.com/food-recipes/easy/g1480/pizza-dough-recipes/>