If in at least one image there are 6 balloons in the foreground.
return balloons ;return foreground ;return #1 that are in  #2 ;return images ;return the  number of  #3 for each  #4 ;return #4 where  #5 is equal to  6 ;return the  number of  #6 ;return if  #7 is at least one
['select', 'select', 'filter', 'select', 'group', 'comparative', 'aggregate', 'boolean']