<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://del.h-cdn.co/assets/cm/15/10/54f64859f1cb5_-_201001-r-mushroom-and-sausage-lasagna.jpg>
<http://www.delish.com/cooking/g2149/easy-lasagna-recipes/>