<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://del.h-cdn.co/assets/cm/15/10/160x160/54f6c3c8d8e5a_-_basic-chocolate-cake-8bhjel-lg.jpg>
<http://www.delish.com/cooking/g1742/easy-chocolate-cake-clg/>