About: http://webisa.webdatacommons.org/191259370

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	Emphasis on horizontal drilling has been cyclical and dependent upon the price level of oil, gas and other natural resources which may be recovered via the use of such techniques.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com