| http://www.w3.org/ns/prov#value | - Trade union membership, for example, could be deduced from a fare basis or ticket designator indicating a discount negotiated for a union congress, from an organizational credit card number used as a form of payment, from a ticket delivery address or phone number at a union office, or from information in the free-text general remarks" portion of the PNR. it is especially essential to exclude the
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