Who was a film director that executive produced M2 , M3 , M4 , and M5
SELECT DISTINCT ?x0 WHERE {
?x0 a ns:film.director .
?x0 a ns:people.person .
?x0 ns:film.producer.films_executive_produced M2 .
?x0 ns:film.producer.films_executive_produced M3 .
?x0 ns:film.producer.films_executive_produced M4 .
?x0 ns:film.producer.films_executive_produced M5
}