Who was a film producer that M2 was played by and M3 was played by
SELECT DISTINCT ?x0 WHERE {
?x0 a ns:film.producer .
?x0 a ns:people.person .
?x0 ns:film.actor.film/ns:film.performance.character M2 .
?x0 ns:film.actor.film/ns:film.performance.character M3
}