PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Two-thirds of known meteorites are iron/nickel in composition, containing mostly iron but about 5-30 percent nickel and a few tenths of one percent cobalt, along with high concentrations (at least by standards on Earth) of strategic metals, from the platinum group to gold, gallium, germanium, iridium and others.
http://www.w3.org/ns/prov#wasQuotedFrom
  • centauri-dreams.org