{"conversations": [{"from": "user", "value": "Si us plau nomena els presidents de la Rep\u00fablica Argentina des de 1826 indicant la durada dels seus mandats i quins van ser elegits i quins de facto."}, {"from": "assistant", "value": "Els presidents de la Rep\u00fablica Argentina des del 1826 han estat : Bernardino Rivad\u00e0via (1826-1827 ) Manuel Dorrego (1827-1828 ), Juan Lavalle (1828-1829 ), Manuel Vicente Maza ( 1829-1832 ), Juan Ram\u00f3n Balcarce ( 18832-1834 ), Juan Jos\u00e9 Viamonte ( 1834-1835 ), Juan Manuel de Rosas ( 1835-1852 ), Just Jos\u00e9 d'Urquiza (1854- 1860 ) Santiago Derqui ( 1860 - 1866 ), Bartolom\u00e9 Mitre ( 1862 - 1868 ), Domingo Faustino Sarmiento ( 1868 - 1874 ), Nicol\u00e1s Avellaneda ( 1874 - 1880 ), Julio Argentino Roca ( 1880 - 1886 i 1898 - 1904 ), Carlos Pellegrini ( 1890 - 1898 ), Jos\u00e9 Figueroa Alcorta ( 1906 - 1910 ), Roque S\u00e1enz Pe\u00f1a ( 1910 - 1914 ), Victorino de la Plaza ( 1914 - 1916 ), 1638 ), 1946 ( 1938 ), 1932, 1938, 1938, 1932, 1918 i 1938."}]}