How many of the green balls have the same finish as the red ball?
return the  red ball ;return balls ;return #2 that are green ;return finish of #1 ;return finishes of #3 ;return #3 where #5 is the  same as #4 ;return number of  #6
['select', 'select', 'filter', 'project', 'project', 'comparative', 'aggregate']