Return the number of accounts that the customer with the first name Art and last name Turcotte has.
return customers ;return first names of #1 ;return last names of #1 ;return #1 where #2 is  Art ;return #1 where #3 is  Turcotte ;return accounts of both #4 and #5 ;return number of  #6
['select', 'project', 'project', 'comparative', 'comparative', 'intersection', 'aggregate']