How many total males in the population are from India, Bangladesh and Pakistan?
return the  population ;return males of #1 ;return #2 that are from  India ;return #2 that are from  Bangladesh ;return #2 that are from  Pakistan ;return #3 ,  #4 ,   #5 ;return number of  #6
['select', 'project', 'filter', 'filter', 'filter', 'union', 'aggregate']