About: http://webisa.webdatacommons.org/119112098

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	By March 1945, over 250 balloons had been discovered in nine western states, including Hawaii, and in western Canada.
http://www.w3.org/ns/prov#wasQuotedFrom	wnd.com