About: http://webisa.webdatacommons.org/451248189

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	In yet another aspect, the invention is a system for controlling a drilling machine having a pipe handling assembly for adding and removing a plurality of pipe sections from a drill string.
http://www.w3.org/ns/prov#wasQuotedFrom	google.fr