If the right and left images contain the same number of parrots.
return left image ;return parrots in  #1 ;return number of  #2 ;return right image ;return parrots in  #4 ;return number of #5 ;return if  #3 is equal to  #6
['select', 'project', 'aggregate', 'select', 'project', 'aggregate', 'boolean']