PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Examine properties of over 100,000 stars, including distance, parallax, luminosity, and position on the Hertzsprung???Russel diagram
http://www.w3.org/ns/prov#wasQuotedFrom
  • wolframalpha.com