About: http://webisa.webdatacommons.org/225733475

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	This activity greatly increased towards December 7, 1941. . . . [The Japanese] knew from maps which they had obtained, the exact location of vital air fields, hangars, and other structures.
http://www.w3.org/ns/prov#wasQuotedFrom	americanheritage.com