<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://del.h-cdn.co/assets/cm/15/10/54f648a74e168_-_zucchini-pesto-pizza-recipe-ghk1013-q8tbeh-de.jpg>
<http://www.delish.com/cooking/g306/unconventional-pizza-toppings/?src=shelter_footer>