Did more border guards or Pioneers of the Bundeswehr work on construction?
return border guards ;return Pioneers of the  Bundeswehr ;return #1 that work on construction ;return #2 that work on construction ;return number of  #3 ;return number of  #4 ;return which is more of #5 ,  #6
['select', 'select', 'filter', 'filter', 'aggregate', 'aggregate', 'comparison']