About: http://webisa.webdatacommons.org/5885984

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	Until about the 1970s, cryptography was mainly done in secret by military or spy agencies.
http://www.w3.org/ns/prov#wasQuotedFrom	goldenageofgaia.com