PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Clay minerals are hydrous aluminum phyllosilicates that feature varying amounts of iron, magnesium and other metals and constituents and form in a more alkaline water.
http://www.w3.org/ns/prov#wasQuotedFrom
  • planetary.org