About: http://webisa.webdatacommons.org/199936069

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	However, reservation systems, such as Deltamatic and SABRE have been around since the early 1960s, AFAIK.
http://www.w3.org/ns/prov#wasQuotedFrom	airliners.net