How many other objects are the same color as the metal object?
return objects ;return #1 that is  metal ;return colors of #1 ;return color of #2 ;return #1 besides  #2 ;return #5 where #3 is  the same as #4 ;return number of  #6
['select', 'filter', 'project', 'project', 'discard', 'comparative', 'aggregate']