Show the first name and last name for the customer with account name 900.
return customers ;return accounts of #1 ;return names of #2 ;return #1 where #3 is 900 ;return first name  of #4 ;return last name  of #4 ;return #5 ,  #6
['select', 'project', 'project', 'comparative', 'project', 'project', 'union']