PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Indeed, the demographic shift we are highlighting here is a consequence of the long-term drop in the fertility rate during the decades following the 1947???49 baby boom, particularly from the mid-1970s on, when the total fertility rate fell below the replacement rate (the rate required to maintain a stable population).
http://www.w3.org/ns/prov#wasQuotedFrom
  • nippon.com