PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • According to Wagus, glass differs from materials, such as steel, which offers straight-forward results. ???Glass is different because it behaves in a statistical manner,??? said Wagus. ???Until recently, the glass companies couldn???t agree on acceptable glass stress loads.
http://www.w3.org/ns/prov#wasQuotedFrom
  • usglassmag.com