PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Jupiter and Saturn are composed mainly of hydrogen and helium, and as you go deeper, the hydrogen would transition from a molecular state (like a gas) down to a metallic state.
http://www.w3.org/ns/prov#wasQuotedFrom
  • seti.org