If in the left image, there is one zebra with black and purple stripes.
return left image ;return zebra in  #1 ;return stripes of #2 ;return #3 that are black ;return #3 that are purple ;return #2 that has #4 ;return #6 that has #5 ;return number of  #7 ;return if  #8 is equal to  one
['select', 'project', 'project', 'filter', 'filter', 'filter', 'filter', 'aggregate', 'boolean']