<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://rbk.h-cdn.co/assets/cm/14/51/980x551/548f0cc91bdef_-_rbk-frost-a-cake-1013-5-s2.jpg>
<http://www.redbookmag.com/food-recipes/advice/g1927/how-to-frost-a-cake/>