"Joseph Maria Wolfram"@en . "1789-07-21Z"^^ . . "amateur composer" . . . "1839Z"^^ . . . "Joseph Maria Wolfram (21 July 1789 \u2013 30 September 1839) was a German-Czech politician and amateur composer who wrote operas which were performed with success."@en . "1789Z"^^ . "Wolfram, Joseph Maria"@en . "1839-09-30Z"^^ .