PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Since there is an inherent potential confusion as to whether a time is an hour ago or 23 hours from now, these times are interpreted as being somewhere within the sliding window that begins four hours prior to and twenty hours ahead of the current time.
http://www.w3.org/ns/prov#wasQuotedFrom
  • google.com