How many years after the last raid into Hungary by the Crimean Taters took place was the last major Tatar raid that took place during the Russo-Turkish War?
return the  last  raid into Hungary by the   Crimean Taters ;return the  last  major Tatar raid that took place during the   Russo-Turkish War ;return year of #1 ;return year of #2 ;return the  difference of #4 and  #3
['select', 'select', 'project', 'project', 'arithmetic']