PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • (2) The degree of steepness or inclination, e.g., of a road or other geographic features.
http://www.w3.org/ns/prov#wasQuotedFrom
  • biology-online.org