PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • This year, a spectrometer will sail for 10 days around the continent, tracking gamma rays emitted by neutron stars, black holes, the center of the galaxy, and other features.
http://www.w3.org/ns/prov#wasQuotedFrom
  • nsf.gov