PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • According to researchers, the world's reservoirs release 20 percent of the total methane from all known sources connected to human activity, including livestock, fossil fuels, and landfills.
http://www.w3.org/ns/prov#wasQuotedFrom
  • huffingtonpost.com