If in at least one photo a man is using a walking stick on the grass
return man ;return walking stick ;return grass ;return #1 using #2 ;return #4 on #3 ;return photos of #5 ;return the  number of  #6 ;return if  #7 is at least one
['select', 'select', 'select', 'filter', 'filter', 'project', 'aggregate', 'boolean']