Show the names of customers having an order with shipping method FedEx and order status Paid.
return customers ;return orders of #1 ;return statuses of #2 ;return shipping methods of #2 ;return #1 where #3 is  Paid ;return #1 where #4 is  FedEx ;return #1 in both #5 and #6 ;return the  names of #7
['select', 'project', 'project', 'project', 'comparative', 'comparative', 'intersection', 'project']