<prompt> Translate the following text to SwahiliThe Grands Boulevards, running from the Madeleine past the Opera-Garnier and all the way to place de la Bastille, comprised the fashionable heart of Paris from the 1860s until well into the 20th century.  <response>: Grands Boulevards, kuanzia Madeleine hadi Opera-Garney hadi Place de la Bastille, ilikuwa moyo wa Paris kutoka miaka ya 1860 hadi karne ya 20. 