<https://secure.gravatar.com/avatar/ae0a54a4441fd64d3495b0fec38830ab?s=96&amp;d=mm&amp;r=g>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://arrival3d.com/3d-laser-scanning-goes-into-the-mines/>