PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Steel structure workshop included the main structure( steel beam/girder, steel column/pillar), the secondary structure( roof and wall purlin, steel bracing, tie-bar, etc), door and windows, and other accessories.
http://www.w3.org/ns/prov#wasQuotedFrom
  • alibaba.com