PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • and can fluctuate due to conditions that are difficult to predict, including global competition for resources, weather conditions, consumer demand and changes in governmental trade and agricultural programs.
http://www.w3.org/ns/prov#wasQuotedFrom
  • sec.gov