About: http://webisa.webdatacommons.org/330007494

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	Anyone can upgrade for $50 per segment, so for example there is no reason to buy a first class fare at the counter before your flight, just buy coach and pay the $50..
http://www.w3.org/ns/prov#wasQuotedFrom	airliners.net