PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • This invention relates to oil and gas well logging and in particular provides a system for collecting real time and lag data concerning the drilling operations of an oil and gas well which are then processed and correlated to match real time data at a particular elevation with lag data and then displayed on a screen or printed out for immediate utilization in the drilling operation.
http://www.w3.org/ns/prov#wasQuotedFrom
  • google.com