If at least one schnauzer is in front of a white wall in a balancing upright pose, with its front paws not supported by anything.
return schnauzers ;return wall ;return #2 that is white ;return #1 in  front  of #3 ;return #4 in  a  balancing upright pose ;return front  paws of #5 ;return #5 where  #6 are not supported by anything ;return number of  #7 ;return if  #8 is at least one
['select', 'select', 'filter', 'filter', 'filter', 'project', 'comparative', 'aggregate', 'boolean']