How many objects are bigger than the green ball?
return balls ;return #1 that  are green ;return objects besides #2 ;return the  size of #2 ;return the  size of #3 ;return #3 where #5 is  bigger than  #4 ;return the  number of  #6
['select', 'filter', 'discard', 'project', 'project', 'comparative', 'aggregate']