PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Fluoride is one of the most abundant natural substances found on Earth and is a constituent of the rocks, soils, waters and air that make up our planet.
http://www.w3.org/ns/prov#wasQuotedFrom
  • nerc.ac.uk