<prompt> Alexander Dubček ; 27 kəntawu November 1921  7 kəntawu November 1992 shima siyasawu Slovakbe wo shidone katiba buro salakye shi Presidium of the Central Committee of the Communist Party of Czechoslovakia KSČ de facto kərmai Czechoslovakiabe January 1968 lan səta April 1969 ro saadənadə. Shiye gomnati communistye zaman Prague Springye dәga fasaltәgәro jaraftәgә amma waltә kәlanzә koltәgә sәdәna ngawo kәrmai Warsaw Pactye dәye sәdәn.  <response>: August saa 1968 lan. 