Did more men die in the final assault that were Serbs or that were Bulgarians?
return Serbs ;return Bulgarians ;return #1 that die in  the  final assault ;return #2 that die in  the  final assault ;return number of  #3 ;return number of  #4 ;return which is more of #5 ,  #6
['select', 'select', 'filter', 'filter', 'aggregate', 'aggregate', 'comparison']