How many of the objects are not gray or silver?
return objects ;return #1 that  are gray ;return #1 that  are silver ;return number of  #1 ;return number of  #2 ;return number of  #3 ;return sum of #5 and #6 ;return difference #4 and #7
['select', 'filter', 'filter', 'aggregate', 'aggregate', 'aggregate', 'arithmetic', 'arithmetic']