About: http://webisa.webdatacommons.org/35268253

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	The invention is a system for identifying the orientation and depth of underground objects, such as lines and sondes.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com