<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://ghk.h-cdn.co/assets/cm/15/12/5508b1d36e2b1-dark-chocolate-0211-s3.jpg>
<http://www.goodhousekeeping.com/health/advice/a14144/how-to-prevent-heart-disease/>