<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://del.h-cdn.co/assets/cm/15/10/320x160/54f676cf26f88_-_strawberries-ijnvao-ocdaok-2-de-xl.jpg>
<http://www.delish.com/food/news/g1510/foods-that-naturally-whiten-teeth/>