How many years after the Battle of Nieuwpoort ocurred did the area obtain city rights from County Philip of Flanders?
return the  Battle of Nieuwpoort ocurred ;return the  area did obtain city rights from  County Philip of Flanders ;return year of #1 ;return year of #2 ;return difference of #4 and  #3
['select', 'select', 'project', 'project', 'arithmetic']