About: http://webisa.webdatacommons.org/301383519

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	Frequency does not determine if a flight is a charter flight, and North American Airlines is a scheduled airline, although they do run a large charter operation, just like Frontier, Northwest, and others.
http://www.w3.org/ns/prov#wasQuotedFrom	airliners.net