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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	There are different methods for extracting natural gas depending whether it is in land or not, whether it is topical or deep, which is most cost efficient compared to environmentally efficient and so forth.
http://www.w3.org/ns/prov#wasQuotedFrom	topdocumentaryfilms.com