PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • At this stage, a human embryo is a round, fluid-filled ball of about 150 undifferentiated cells.
http://www.w3.org/ns/prov#wasQuotedFrom
  • theatlantic.com