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Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	In the late 1960s Paul Ehrlich wrote, ???High-grade iron, copper, and other ores are no longer easily accessible; nor does oil bubble to the surface. . . .
http://www.w3.org/ns/prov#wasQuotedFrom	masterresource.org