<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://hbz.h-cdn.co/assets/cm/15/04/480x720/54bd06bce3f34_-_hbz-dazzling-smile-colgate-optic-white-xln.jpg>
<http://www.harpersbazaar.com/beauty/advice/g2433/best-teeth-whitnening-products/>