PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Since 1990, however, sosus has been available to civilian researchers listening for other things, such as whales and volcanic eruptions on midocean ridges. sosus detected its first eruption in 1993, and on February 18 it picked up another, 100 miles off the coast of Oregon along the Gorda Ridge.
http://www.w3.org/ns/prov#wasQuotedFrom
  • discovermagazine.com