PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • People had thought there was a 'floor' to metallicity, that nothing could be less than one-thousandth the solar enrichment.
http://www.w3.org/ns/prov#wasQuotedFrom
  • tgdaily.com