How many objects are the same material as the tiny yellow ball?
return yellow ball ;return #1 that  is  tiny ;return objects besides #2 ;return material of #2 ;return materials of #3 ;return #3 where #4 is  the same as #5 ;return number of #6
['select', 'filter', 'discard', 'project', 'project', 'comparative', 'aggregate']