PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Titanium is all kinds of useful in part because of its general inertness(under standard conditions) and aluminum is protected by a thin layer of its oxide.
http://www.w3.org/ns/prov#wasQuotedFrom
  • boingboing.net