About: http://webisa.webdatacommons.org/342362141

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	By downhole string, we mean any form of drill pipe, tubing, casing, coil tubing, cable, wire line or other such device which is run down into a well during or after the drilling of the well.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com