PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Determining which water-bearing zone particular data represent, as well as determining the area distribution for that data and the change of data over time, may be impossible using indirect is information such as well construction data, geophysical logs from long-screened production wells, and composite water-chemistry samples from well surface discharge.
http://www.w3.org/ns/prov#wasQuotedFrom
  • google.com