<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://edc.h-cdn.co/assets/cm/15/04/640x430/54c1c3cad7114_-_baumraum_djuren6-xln.jpg>
<http://www.elledecor.com/life-culture/travel/g937/baumraum-modern-treehouse-country-living/>