Did a screenwriter that M2 , M3 , and M4 were played by executive produce M1
SELECT count(*) WHERE {
?x0 a ns:film.writer .
?x0 ns:film.actor.film/ns:film.performance.character M2 .
?x0 ns:film.actor.film/ns:film.performance.character M3 .
?x0 ns:film.actor.film/ns:film.performance.character M4 .
?x0 ns:film.producer.films_executive_produced M1
}