<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://wdy.h-cdn.co/assets/cm/15/09/160x213/54eb811c7207c_-_variations-mdn.jpg>
<http://www.womansday.com/food-recipes/food-drinks/g148/how-to-make-homemade-lemonade-119131/>