Who lost more troops on 29 April 1918 - the Whites or the Reds?
return troops ;return #1 that was  lost on 29 April 1918 ;return #2 that was  the  Whites ;return #2 that was  the  Reds ;return number of  #3 ;return number of  #4 ;return which is highest of #5 ,  #6
['select', 'filter', 'filter', 'filter', 'aggregate', 'aggregate', 'comparison']