What is zip code of customer with first name as Carole and last name as Bernhard?
return customers ;return first names of  #1 ;return #1 where #2 is  Carole ;return last names of  #1 ;return #1 where #4 is  Bernhard ;return #1 of  both #3 and  #5 ;return zip code of  #6
['select', 'project', 'comparative', 'project', 'comparative', 'intersection', 'project']