PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • They need to state what materials they will use i.e. sheet metal or ductboard, hard pipe or flex duct.
http://www.w3.org/ns/prov#wasQuotedFrom
  • hvac-talk.com