PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Instead of ink that prints documents, a range of materials, including plastic and metals, can be sourced into the 3-D printer and used to form physical objects.
http://www.w3.org/ns/prov#wasQuotedFrom
  • thomasnet.com