If an image shows at least one dog that is walking forward, with one front paw in front of the other.
return images ;return dogs in  #1 ;return #2 that are walking forward ;return one front  paw of #3 ;return the  other front  paw of #3 ;return #3 where  #4 is in  front of #5 ;return number of  #6 for each  #1 ;return #1 where  #7 is at least one ;return number of  #8 ;return if  #9 is equal to  one
['select', 'project', 'filter', 'project', 'project', 'comparative', 'group', 'comparative', 'aggregate', 'boolean']