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