If at least one of the animals is mounted on a grey marblized wall.
return animals ;return wall ;return #2 that is marblized ;return #3 that is grey ;return #1 mounted on #4 ;return the  number of  #5 ;return if  #6 is at least one
['select', 'select', 'filter', 'filter', 'filter', 'aggregate', 'boolean']