About: http://webisa.webdatacommons.org/311660354

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	It is often difficult, however, to identify a particular collar without lowering the gun or other tool fully to the bottom of the well -to check the accuracy of the wire line.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com