About: http://webisa.webdatacommons.org/227585555

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	It must be a trip that was a round-trip from point of origin to destination and return. (Open-jaw trips and other types of trips involving more than one destination can not be included in this survey.
http://www.w3.org/ns/prov#wasQuotedFrom	airliners.net