If at least one image shows a hound on all fours on the grassy ground.
return hound ;return all fours of  #1 ;return #1 on #2 ;return ground ;return #4 that is  grassy ;return #3 on #5 ;return if  #6 is  in  at least one image
['select', 'project', 'filter', 'select', 'filter', 'filter', 'boolean']