<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://edc.h-cdn.co/assets/cm/15/04/54c07dbdea1a8_-_eco-flooring-half.jpg>
<http://www.elledecor.com/home-remodeling-renovating/a3910/green-flooring-guide-a-56160/>