Which age group in percent from the county is larger: under the age of 18 or 45 to 64?
return age  groups from  the  county ;return #1 that are under the  age  of 18 ;return #1 that are from  the  ages of 45 to 64 ;return percent of #2 ;return percent of #3 ;return which is the  highest of #4 ,  #5
['select', 'filter', 'filter', 'project', 'project', 'comparison']