PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Accordingly, there is a need for a method and apparatus for controlling the initiation and propagation of a hydraulic fracture in a single well bore in formations of unconsolidated or weakly cemented sediments, which behave substantially different from brittle rocks in which most of the hydraulic fracturing experience is founded.
http://www.w3.org/ns/prov#wasQuotedFrom
  • google.co.uk