<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://wdy.h-cdn.co/assets/cm/15/09/54eb0714c2b9c_-_5riskiest-foods-to-eat-potatoes_medium.jpg>
<http://www.womansday.com/health-fitness/nutrition/a2607/the-11-most-contaminated-foods-123406/>