About: http://webisa.webdatacommons.org/253111338

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	September 21, 1977 - Fifteen nations, including the United States and the Soviet Union, sign a nuclear-proliferation pact, slowing the spread of nuclear weapons around the world.
http://www.w3.org/ns/prov#wasQuotedFrom	stvinc.com