Which group for households in the city is larger: under the age of 18 or 18 to 24?
return households ;return #1 in  the  city ;return groups of #2 ;return size of #3 ;return #4 where #3 is under the  age of 18 ;return #4 where #3 is 18 to 24 ;return which is highest of #5 ,  #6
['select', 'filter', 'project', 'project', 'comparative', 'comparative', 'comparison']