PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Extruder: There are many types of extruders, which heat up and then expel gooey plastic, but Stratasys says Afinia???s model is too close to its own.
http://www.w3.org/ns/prov#wasQuotedFrom
  • gigaom.com