<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://del.h-cdn.co/assets/cm/15/10/54f8c8c25e243_-_meatball-sliders-1-0510-msc.jpg>
<http://www.delish.com/holiday-recipes/a37087/best-burger-recipes/>