<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://clv.h-cdn.co/assets/cm/15/09/54eaf9afd94a4_-_clx-better-burger-patty-de-1318570.jpg>
<http://www.countryliving.com/food-drinks/g818/perfect-hamburger-recipe/?click=smart&kw=ist&src=smart&mag=CLG&link=>