If the left and right image contains the same number of medium size knee braces.
return knee braces ;return size of  #1 ;return #1 where #2 is  medium ;return #3 in  the  left image ;return #3 in  the  right image ;return number of #4 ;return number of #5 ;return if  #6 is  equal to #7
['select', 'project', 'comparative', 'filter', 'filter', 'aggregate', 'aggregate', 'boolean']