PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Natural features, such as geology, climate, hydrology, soils, and land-management practices, such as tile drainage, irrigation, and conservation strategies, affect the movement of nutrients from the land to water and thereby often result in different concentration patterns over large regions.
http://www.w3.org/ns/prov#wasQuotedFrom
  • usgs.gov