PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Because ion exchange units can be used to remove minerals from your water, particularly calcium and magnesium, they are sold for water softening.
http://www.w3.org/ns/prov#wasQuotedFrom
  • chlorinefilter.net