How many lessons taken by customer with first name as Rylan and last name as Goodwin were completed?
return customers ;return first names of  #1 ;return #1 where  #2 is Rylan ;return last names of  #1 ;return #1 where  #4 is Goodwin ;return #1 of  both #3 and #5 ;return lessons taken by #6 ;return #7 that  were completed ;return number of  #8
['select', 'project', 'comparative', 'project', 'comparative', 'intersection', 'project', 'filter', 'aggregate']