<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://del.h-cdn.co/assets/cm/15/10/54f65e777f2bf_-_three-cheese-herb-frittata-sandwiches-recipe-fw0213-xl.jpg>
<http://www.delish.com/cooking/g923/frittatas/>