How many total people were killed, captured and were listed as casualties?
return people ;return #1 that were killed ;return #1 that were captured ;return #1 that were listed as casualties ;return number of  #2 ;return number of  #3 ;return number of  #4 ;return sum of #5 ,  #6 ,   #7
['select', 'filter', 'filter', 'filter', 'aggregate', 'aggregate', 'aggregate', 'arithmetic']