How many months after Lan Na rebellions started did the Burmese armies get stuck in Siam?
return Lan Na rebellions started ;return Burmese armies did get stuck in  Siam ;return when  was  #1 ;return when  was  #2 ;return difference of #4 and  #3 in  months
['select', 'select', 'project', 'project', 'arithmetic']