Who executive produced M1 , directed M3 , directed M4 , and executive produced M2
SELECT DISTINCT ?x0 WHERE {
?x0 a ns:people.person .
?x0 ns:film.director.film M3 .
?x0 ns:film.director.film M4 .
?x0 ns:film.producer.films_executive_produced M1 .
?x0 ns:film.producer.films_executive_produced M2
}