<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://ghk.h-cdn.co/assets/15/16/480x720/gallery-1428947857-54ff5f852509e-1ghk-plants-you-cannot-kill-kalanchoe2-s2-115412-am.jpg>
<http://www.goodhousekeeping.com/home/gardening/advice/g1285/hard-to-kill-plants/>