How many years after the Mongols ended the fictional central Burma province of Mianzhong did Kyawswa submit to the Mongols?
return the  Mongols  ended the   fictional central Burma province of Mianzhong ;return Kyawswa did submit to the  Mongols  ;return year of #1 ;return year of #2 ;return difference of #4 and  #3
['select', 'select', 'project', 'project', 'arithmetic']