How many shiny, metallic things are to the left of the purple cube?
return cube ;return #1 that  is  purple ;return things ;return #3 that  are shiny ;return #4 that  are metallic ;return #5 to the  left of #2 ;return number of  #6
['select', 'filter', 'select', 'filter', 'filter', 'filter', 'aggregate']