"1913-04-29Z"^^ . "Derx, Willem Jan"@en . . "1913Z"^^ . . "Dutch military officer" . . "Netherlands" . . "1844Z"^^ . . "1844-03-26Z"^^ . . . "Willem Jan Derx"@en . . "Willem Jan Derx (26 March 1844 \u2013 29 April 1913) was a vice admiral of the Royal Netherlands Navy."@en .