PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • This release will have global effects on the atmospheric concentrations of such greenhouse gases as carbon dioxide and methane; it may also have regional effects on all levels of stream productivity in the Yukon River watershed, including salmon populations.
http://www.w3.org/ns/prov#wasQuotedFrom
  • usgs.gov