How many days after the Soviet 11th Red Army's invasion of the First Republic of Armenia started did  Garegin Nzhdeh declare Syunik as a self-governing region?
return the  Soviet 11th Red Army 's invasion of the First Republic of  Armenia started ;return Garegin Nzhdeh did declare Syunik as a self-governing region ;return when  was  #1 ;return when  was  #2 ;return difference of #3 and  #4 in  days
['select', 'select', 'project', 'project', 'arithmetic']