PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • If the result of (3) gives you a midpoint of a quarter that is on a day other than the first day or midpoint of a month, treat the property as placed in service or disposed of on the nearest preceding first day or midpoint of that month.
http://www.w3.org/ns/prov#wasQuotedFrom
  • ntis.gov