PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • This increasing acidity is already known to affect some Arctic creatures which use calcium to build their shells, including some sea snails, mussels and other molluscs.
http://www.w3.org/ns/prov#wasQuotedFrom
  • truthdig.com