Return the full name of the staff who provided a customer with the first name April and the last name Burns with a film rental.
return customers ;return first names of #1 ;return last names of #1 ;return #1 where #2 is  April ;return #1 where #3 is  Burns ;return #1 in both #4 and #5 ;return film rentals of #6 ;return staff who provided #7 ;return the   first name of #8 ;return the   last name of #8 ;return #9 ,  #10
['select', 'project', 'project', 'comparative', 'comparative', 'intersection', 'project', 'project', 'project', 'project', 'union']