<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://rbk.h-cdn.co/assets/cm/14/51/980x699/548f396962c5f_-_rbk-superfoods-0314-6-s2.jpg>
<http://www.redbookmag.com/body/health-fitness/advice/g2116/the-healthiest-superfoods/>