If left and right images each contain a single sneaker, and the pair of images are arranged heel to heel.
return sneakers ;return left image ;return right image ;return #1 that is in  #2 ;return #1 that is in  #3 ;return number of  #4 ;return number of  #5 ;return if  #6 is equal to  one ;return if  #7 is equal to  one ;return if  both  #8 and #9 are true ;return if  #4 and #5 are arranged heel to  heel  ;return if  both  #10 and #11 are true
['select', 'select', 'select', 'filter', 'filter', 'aggregate', 'aggregate', 'boolean', 'boolean', 'boolean', 'boolean', 'boolean']