PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • A typical ash plume is composed of pulverized rock from the disintegrated volcano, small droplets of cooling lava and a mix of gases???including water vapor, sulfur dioxide, bromine oxide and other toxic compounds.
http://www.w3.org/ns/prov#wasQuotedFrom
  • propilotmag.com