About: http://webisa.webdatacommons.org/214461571

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	Though the most important developments during the first half of this century took place in the industrial countries, especially the United States, the picture has changed somewhat since the 1950s.
http://www.w3.org/ns/prov#wasQuotedFrom	britannica.com