How many years after the Battle of Sarikamish did World War I end?
return Battle of Sarikamish ;return World War I did end ;return when  was  #1 ;return when  was  #2 ;return the  year of #3 ;return the  year of #4 ;return the  difference of #6 and  #5
['select', 'select', 'project', 'project', 'project', 'project', 'arithmetic']