<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://clv.h-cdn.co/assets/cm/15/09/160x213/54eb4a8c8c9a0_-_light-and-creamy-potato-salad-recipe-0710-mdn.jpg>
<http://www.countryliving.com/food-drinks/g1094/potatoes/>