PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Aquifers are out of sight, often difficult to identify and measure, and they are far from uniform in thickness, shape, and such important properties as porosity and permeability.
http://www.w3.org/ns/prov#wasQuotedFrom
  • ku.edu