<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://edc.h-cdn.co/assets/cm/15/04/54c19ae7d3afc_-_rooms-are-like-a-frame-thumb2.jpg>
<http://www.elledecor.com/design-decorate/interior-designers/tips/a6201/a-room-is-like-a-frame/>