If an image shows at least one elephant with feet in the water.
return elephant ;return water ;return feet of #1 ;return #3 that is in  #2 ;return #1 that has #4 ;return images ;return number of  #5 for each  #6 ;return #6 where  #7 is at least one ;return number of  #8 ;return if  #9 is at least one
['select', 'select', 'project', 'filter', 'filter', 'select', 'group', 'comparative', 'aggregate', 'boolean']