PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • The number of reported spills (oil, chemical and other pollutants) has increased from an average of 116 from 1982 to 1986, to 246 from 1987 to 1991; only 2 percent of those spills were classified as major (more than 1,000 gallons).
http://www.w3.org/ns/prov#wasQuotedFrom
  • minneapolisfed.org