If an image contains exactly two chimps, and both chimps are sitting on the ground.
return chimps ;return ground ;return #1 that are sitting on #2 ;return images ;return number of  #1 for each  #4 ;return #4 where  #5 is equal to  two ;return number of  #3 for each  #6 ;return #6 where  #7 is equal to  two ;return number of  #8 ;return if  #9 is at least one
['select', 'select', 'filter', 'select', 'group', 'comparative', 'group', 'comparative', 'aggregate', 'boolean']