PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • EPA's Clean Air Markets Program, Data Download http://www.epa.gov/airmarkets/data.html Data on acid rain, NOx, SOx and other air pollutants, including emissions, deposition and other air quality measurements.
http://www.w3.org/ns/prov#wasQuotedFrom
  • seattlecentral.edu