How many more people than families resided in the county according to the 2000 census?
return the  county ;return people resided in  #1 ;return families resided in  #1 ;return #2 according to the  2000 census ;return #3 according to the  2000 census ;return number of  #4 ;return number of  #5 ;return difference of #6 and  #7
['select', 'project', 'project', 'filter', 'filter', 'aggregate', 'aggregate', 'arithmetic']