If images show a total of two pugs dressed in black and white cow costumes.
return pugs ;return cow costumes ;return #2 that are black and white ;return #1 dressed in  #3 ;return images of #4 ;return number of  #4 for each  #5 ;return sum of #6 ;return if  #7 is equal to  two
['select', 'select', 'filter', 'filter', 'project', 'group', 'aggregate', 'boolean']