If there is one white and one black knee brace in the left image.
return the  left image ;return knee braces in  #1 ;return #2 that are  white ;return #2 that are  black ;return number of #3 ;return number of #4 ;return if  #5 is  equal to one  ;return if  #6 is  equal to one  ;return if  both  #7 and #8 are  true
['select', 'project', 'filter', 'filter', 'aggregate', 'aggregate', 'boolean', 'boolean', 'boolean']