How many more troops did Grey de Wilton have when he arrived in Smerwick compared to Sebastiano di San Giuseppe?
return Grey de Wilton ;return Sebastiano di San Giuseppe ;return troops of #1 ;return troops of #2 ;return #3 when  he arrived in  Smerwick ;return #4 when  he arrived in  Smerwick ;return number of  #5 ;return number of  #6 ;return the  difference of #7 and  #8
['select', 'select', 'project', 'project', 'filter', 'filter', 'aggregate', 'aggregate', 'arithmetic']