How many months after the British supply column from Fort Niagara did Pontiac defeat them at the Battle of Bloody Run?
return the  British supply column from  Fort Niagara ;return Pontiac did defeat them at the  Battle of Bloody Run ;return when  was  #1 ;return when  was  #2 ;return difference of #3 and  #4 in  months
['select', 'select', 'project', 'project', 'arithmetic']