Task: Text Categorization
Input (English): bishop of this city who was converted from Protestantism was Melchior Klesl. Napoleon's troops under Jean Lannes and Joachim Murat took this city by convincing its defender, Prince Auersperg, that there was an armistice. (*) This city was defended from the Ottomans for a second time in 1683 by Jan Sobieski. Home to a meeting attended by Alexander I, Viscount Castlereagh, and Klemens von Metternich, for 10 points, name this capital of Austria.
Output (English): History