<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://hbu.h-cdn.co/assets/cm/15/04/980x1470/54c0d5a6c0f11_-_01-hbx-pear-trees-trellis-whitson-0613-s2.jpg>
<http://www.housebeautiful.com/lifestyle/gardening/g2456/landscaping-ideas/>