<http://www.w3.org/1999/02/22-rdf-syntax-ns#rest>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#nil>
<http://www.popularmechanics.com/technology/design/a9467/laser-scanner-builds-3d-map-of-leaning-tower-of-pisa-15966081/>