PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Generally, an inert gas such as argon, helium, nitrogen or carbon dioxide is maintained in the induction furnace to prevent oxidation, absorption of undesirable elements or other variables during the melt.
http://www.w3.org/ns/prov#wasQuotedFrom
  • artmetal.com