<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://edc.h-cdn.co/assets/cm/15/04/320x208/54c1643e0d7ed_-_1-behun-edc-08-13-01-th2.jpg>
<http://www.elledecor.com/design-decorate/room-ideas/g511/unique-staircase-design/>