PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Scale deposits usually include compounds such as metal carbonates, oxides, bicarbonates and hydroxides primarily of Ca, Mg, Fe which deposit on surfaces in contact with water generally as a result of exceeding the limit of solubility of such materials in water.
http://www.w3.org/ns/prov#wasQuotedFrom
  • google.com