About: http://webisa.webdatacommons.org/390009899

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	Eventually, that pressure dissipates, requiring increasingly expensive drilling methods to extract it, such as waterflooding, steam injection, carbon dioxide and other gases or chemicals.
http://www.w3.org/ns/prov#wasQuotedFrom	virginia.edu