PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Measured and calculated PCO2 indicate that lakes are a source, not a sink, for atmospheric CO2 .
http://www.w3.org/ns/prov#wasQuotedFrom
  • hubbardbrook.org