If a mirror sits behind the sink in each of the images.
return mirror ;return sink ;return #1 that sits behind #2 ;return images of #3 ;return number of  #4 ;return images ;return number of  #6 ;return if  #5 is equal to  #7
['select', 'select', 'filter', 'project', 'aggregate', 'select', 'aggregate', 'boolean']