About: http://webisa.webdatacommons.org/259713157

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	FIG. 1 is a side elevational view of one embodiment of the present invention including a top drive supported on a mast and aligned with a wellbore.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com.au