How many years after the outbreak of the Nine Years War did the capture of Kaiserswerth and Bonn occur?
return the  outbreak of the   Nine Years War ;return the  capture of Kaiserswerth and  Bonn ;return year of #1 ;return year of #2 ;return the  difference of #4 and  #3
['select', 'select', 'project', 'project', 'arithmetic']