How many people and families resided in the county from the census of 2000?
return the  census of 2000 ;return people in  the  county of #1 ;return families in  the  county of #1 ;return number of  #2 ;return number of  #3 ;return sum of #4 and  #5
['select', 'project', 'project', 'aggregate', 'aggregate', 'arithmetic']