Were M2 and M4 written by M3 , directed by a person , and written by a star of M0
SELECT count(*) WHERE {
?x0 ns:film.actor.film/ns:film.performance.film M0 .
?x1 a ns:people.person .
M2 ns:film.film.directed_by ?x1 .
M2 ns:film.film.written_by ?x0 .
M2 ns:film.film.written_by M3 .
M4 ns:film.film.directed_by ?x1 .
M4 ns:film.film.written_by ?x0 .
M4 ns:film.film.written_by M3
}