PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • February 2009: Article Recent population estimates from Brazil's national statistical office (IBGE) peg the national fertility rate at just 1.9 lifetime children per woman in 2007, lower than previous rates estimated by the UN, the U.S. Census Bureau, PRB, and other international organizations that estimate population measures.
http://www.w3.org/ns/prov#wasQuotedFrom
  • prb.org