Which are there less people of,  0-14 years or those who are 15–64 years?
return people ;return #1 that are 0-14 years  ;return #1 that are 15–64 years  ;return number of  #2 ;return number of  #3 ;return which is less of #4 ,  #5
['select', 'filter', 'filter', 'aggregate', 'aggregate', 'comparison']