How many days passed from when the invasion of the First Republic of Armenia started to when Syunik was declared as a self-governing region
return the  invasion of the First Republic of  Armenia started ;return Syunik was  declared as a self-governing region ;return when  was  #1 ;return when  was  #2 ;return difference of #4 and  #3 in  days
['select', 'select', 'project', 'project', 'arithmetic']