About: http://webisa.webdatacommons.org/98686108

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The invention provides, among other things, a means for determining the nature of the fluid being withdrawn from the formation, particularly whether the fluid consists partially or entirely of mud filtrate.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com