If there are two people in graduation-type robes in the left image.
return left image ;return people of #1 ;return robes ;return #3 that are graduation-type ;return #2 in  #4 ;return the  number of  #5 ;return if  #6 is equal to  two
['select', 'project', 'select', 'filter', 'filter', 'aggregate', 'boolean']