<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://ghk.h-cdn.co/assets/cm/15/11/980x1547/54ff1b4ec3da0-1ghk-history-at-home-coffee-coffee-beans-s2.jpg>
<http://www.goodhousekeeping.com/food-recipes/g754/history-coffee/?src=shelter_footer>