About: http://webisa.webdatacommons.org/419045189

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	At that time, Poland was a part of the Russian empire and the Russian air force had a base there.
http://www.w3.org/ns/prov#wasQuotedFrom	englishrussia.com