PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • As a 2004 NASA press release put it, ???Understanding how the Earth???s mass varies over time is an important component necessary to study changes in global sea level, polar ice mass, deep ocean currents, depletion and recharge of continental aquifers.???
http://www.w3.org/ns/prov#wasQuotedFrom
  • thespacereview.com