What is the full name of the staff member who has rented a film to a customer with the first name April and the last name Burns?
return customers ;return first names of #1 ;return #1 where #2 is April ;return last names of #3 ;return #3 where #4 is Burns ;return staff members who  rented a film to #5 ;return full name  of #6
['select', 'project', 'comparative', 'project', 'comparative', 'project', 'project']