PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • So he is one reason why so much medical knowledge becomes obsolete every -- say, every 25 years, because we are always learning new things and we are realizing that what we thought was an answer to one thing actually wasn't really the answer, that it was something else -- a third intervening reason for some things happening.
http://www.w3.org/ns/prov#wasQuotedFrom
  • cfr.org