PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Also, as diamonds are the hardest natural substance known to man, many survived the effects of erosion and were distributed over a large area by being washed down rivers into the sea.The use of diamonds as gemstones of decorative value is the most familiar use to most people today, but in their rough or uncut form they are a far cry from the image that we know and prize.
http://www.w3.org/ns/prov#wasQuotedFrom
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