<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://ghk.h-cdn.co/assets/cm/15/11/320x320/54ff16bba7e7b-ghk-samsung-ftq307nwgx-range-lgn.jpg>
<http://www.goodhousekeeping.com/home-products/g677/energy-efficient-home-products/>