Was a American costume designer of M0 a costume designer and editor of M1
SELECT count(*) WHERE {
?x0 ns:film.editor.film M1 .
?x0 ns:film.film_costumer_designer.costume_design_for_film M0 .
?x0 ns:film.film_costumer_designer.costume_design_for_film M1 .
?x0 ns:people.person.nationality ns:m.09c7w0
}