<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://rbk.h-cdn.co/assets/cm/14/50/980x1470/548a7faa7503b_-_rbk-green-toys-eco-kids-eco-dough-s2.jpg>
<http://www.redbookmag.com/life/mom-kids/advice/g1406/green-toys/>