<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://ghk.h-cdn.co/assets/cm/15/11/54fe82bcd9134-gleicher-sharkey-family-green-house-lgn.jpg>
<http://www.goodhousekeeping.com/home/a16266/green-house-environmentally-smart-renovation/?src=shelter_footer>