<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://ghk.h-cdn.co/assets/cm/15/11/54fe3a92c47fc-contigo-extreme-mug-md.jpg>
<http://www.goodhousekeeping.com/travel-products/travel-coffee-mug-reviews/a18904/thermal-coffee-mugs/>