PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • A heated electron emitting cathode (the bright spot at center) lights up the interior of a three-meter cast aluminum sphere used to contain plasmas, in an effort to create the kind of dynamo observed at the center of the Earth, sun and many other types of stars.
http://www.w3.org/ns/prov#wasQuotedFrom
  • phys.org