PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Cosmologists and astronomers think these stars were very different from this eras ??? much more massive, luminous and shorter-lived again than subsequent stars because of clouds they formed from would have been totally devoid of elements other than hydrogen and helium.
http://www.w3.org/ns/prov#wasQuotedFrom
  • discovermagazine.com