| http://www.w3.org/ns/prov#value | - A first part is a reservation also referred to as a passenger name record (PNR), and a second is a ticket document, which can be either a physical or electronic document.A PNR is an entry in one or more airlines' reservation databases that holds information such as the passengers' names, the flight segments of a trip, and which inventory (???booking code???) has been reserved on each segment of th
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