Was M2 directed by M3 and M4 and edited by M1 's sequel 's American director
SELECT count(*) WHERE {
?x0 ns:film.director.film ?x1 .
?x0 ns:people.person.nationality ns:m.09c7w0 .
?x1 ns:film.film.prequel M1 .
M2 ns:film.film.directed_by M3 .
M2 ns:film.film.directed_by M4 .
M2 ns:film.film.edited_by ?x0
}