If each image contains just one dispenser, and one image features a dispenser with a black push-button on the bottom.
return dispenser ;return images ;return the  number of  #1 for each  #2 ;return #2 where  #3 is equal to  one ;return the  number of  #2 ;return the  number of  #4 ;return if  #5 is equal to  #6 ;return bottom of #1 ;return push-button ;return #9 that is black ;return #8 that has #10 ;return if  #11 is in  one image  ;return if  both  #7 and #12 is true
['select', 'select', 'group', 'comparative', 'aggregate', 'aggregate', 'boolean', 'project', 'select', 'filter', 'filter', 'boolean', 'boolean']