About: http://webisa.webdatacommons.org/454280573

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	Just like the First class was kept only on the markets where there is a demand for it, the Y+/- could be adopted for certain markets also like North America.
http://www.w3.org/ns/prov#wasQuotedFrom	airliners.net