. . "1"^^ . . "A reference to a specific national railway line." . . "lineReference (1.2.0.0.0.6): The OperationalPoint must have at least one reference to a specific national railway line."@en . . _:vb15578 . _:vb15551 . _:vb15551 . _:vb15551 _:vb15578 . . _:vb15578 . "local" . . "false"^^ .