If one of the images in the pair shows a dog with a tennis ball.
return dog ;return tennis ball ;return #1 that is with #2 ;return images ;return number of  #3 for each  #4 ;return #4 where  #5 is at least one ;return number of  #6 ;return if  #7 is equal to  one
['select', 'select', 'filter', 'select', 'group', 'comparative', 'aggregate', 'boolean']