<https://secure.gravatar.com/avatar/97bea9657b32025d3ae75bf2bd1075cf?s=96&amp;d=mm&amp;r=g>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://wisesociety.it/architettura-e-design/case-off-grid/>