<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://del.h-cdn.co/assets/cm/15/10/54f6448f6aef4_-_lasagna-toss-spinach-ricotta-rf-vo8txq-xlg.jpg>
<http://www.delish.com/cooking/g246/ricotta-recipes/?src=shelter_footer>