PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • A bottom-hole assembly 112 may include the drill bit 106 as well as sensors and other downhole tools such as logging-while-drilling (???LWD???) tools, measurement-while-drilling (???MWD???) tools, diagnostic-while-drilling (???DWD???) tools, or the like.
http://www.w3.org/ns/prov#wasQuotedFrom
  • google.com