Were M2 and M4 written by M3 and executive produced by a film 's American star
SELECT count(*) WHERE {
?x0 ns:film.actor.film/ns:film.performance.film ?x1 .
?x0 ns:people.person.nationality ns:m.09c7w0 .
?x1 a ns:film.film .
M2 ns:film.film.executive_produced_by ?x0 .
M2 ns:film.film.written_by M3 .
M4 ns:film.film.executive_produced_by ?x0 .
M4 ns:film.film.written_by M3
}