Where there more expatriots in Bangkok from Africa or Lao?
return Bangkok ;return expatriots of #1 ;return #2 from  Africa ;return #2 from  Lao ;return number of  #3 ;return number of  #4 ;return which is highest of #5 ,  #6
['select', 'project', 'filter', 'filter', 'aggregate', 'aggregate', 'comparison']