<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://del.h-cdn.co/assets/cm/15/10/54f64af1ac405_-_al-brussels-sprout-potato-frittatas-recipe-ew0312-egor2i-xl.jpg>
<http://www.delish.com/cooking/g923/frittatas/>