. . . "1919-07-07Z"^^ . . "Oskar Bider"@en . "1891-07-12Z"^^ . "1891Z"^^ . "Bider, Oskar"@en . . . . . "Oskar Bider (July 12, 1891 in Langenbruck \u2013 July 7, 1919 in D\u00FCbendorf) was a Swiss aviation pioneer."@en . "1919Z"^^ . . . . "Swiss aviation pioneer" .