How many more individual people are there that are Portuguese than white people not of Portuguese descent?
return Portuguese people ;return white people ;return #2 that are of Portuguese descent ;return number of  #1 ;return number of  #2 ;return number of  #3 ;return the  difference of #5 and  #6 ;return the  difference of #4 and  #7
['select', 'select', 'filter', 'aggregate', 'aggregate', 'aggregate', 'arithmetic', 'arithmetic']