PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • When permafrost thaws, organic material in the soil decomposes and releases gases such as methane and carbon dioxide.
http://www.w3.org/ns/prov#wasQuotedFrom
  • frontierscientists.com