About: http://webisa.webdatacommons.org/423450564

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	The early versions of the 221 didn't have a radio and depended on visual signals such as flags.
http://www.w3.org/ns/prov#wasQuotedFrom	warwheels.net