<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://edc.h-cdn.co/assets/cm/15/04/320x400/54c1643fad550_-_sweden-edc-01-14-09-lgn-60366142-lgn.jpg>
<http://www.elledecor.com/design-decorate/room-ideas/g511/unique-staircase-design/>