PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Volcanoes such as Redoubt can have frequent phreatic explosions as the water in the hydrothermal system gets superheated by magma intruding below ??? but whether the appearance of this behavior means an eruption is more or less likely is not clear.
http://www.w3.org/ns/prov#wasQuotedFrom
  • scienceblogs.com