About: http://webisa.webdatacommons.org/433599391

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	Training versions of the Avro 504 started being built in 1916 and overall production of the various types lasted 10 years.
http://www.w3.org/ns/prov#wasQuotedFrom	demon.co.uk