PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • By ???metal containing???, ???metal???, or ???metallic???, it is meant to refer to sheets, shaped articles, rods, particles, among other configurations that are based upon at least one metal and alloys including a metal having a naturally occurring, or chemically, mechanically or thermally modified surface.
http://www.w3.org/ns/prov#wasQuotedFrom
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