How many years after declaring war on the Ottoman Empire did the Ottomans recapture Mosul?
return Mosul declaring war on the  Ottomans ;return the  Ottomans did recapture Mosul ;return when  was  #1 ;return when  was  #2 ;return difference of #4 and  #3
['select', 'select', 'project', 'project', 'arithmetic']