PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Currently scientists do not fully understand how shellfish, such as oysters, mussels, scallops and clams produce their shells, or how a change in environment will affect their populations.
http://www.w3.org/ns/prov#wasQuotedFrom
  • ipy.org