PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • The total mass of the cluster, as refined in new Hubble measurements, is estimated to weigh as much as 3 million billion stars like our Sun (about 3,000 times the mass of our own Milky Way galaxy) ??? though most of the mass is hidden away as dark matter.
http://www.w3.org/ns/prov#wasQuotedFrom
  • phys.org