How many total European military were killed, disabled or injured from 1914 to 1918?
return European militaries ;return #1 that were killed from  1914 to 1918 ;return #1 that were disabled from  1914 to 1918 ;return #1 that were injured from  1914 to 1918 ;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']