PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • He called the Barnett Shale one of the greatest gas fields ever found and suggested that the huge natural gas finds could boost demand because they suggest that there will be ample supply.The actual reserves from the nation???s shale-gas fields are mostly speculative because the formations are relatively new and haven???t been fully explored.
http://www.w3.org/ns/prov#wasQuotedFrom
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