PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • problems, including earthquakes and other natural disasters; metallurgical and other processing problems; unusual or unexpected rock formations; ground or slope failures; structural
http://www.w3.org/ns/prov#wasQuotedFrom
  • marketplace.org