Which film producer was a film director that M2 , M3 , and M4 were edited by and were written by
SELECT DISTINCT ?x0 WHERE {
?x0 a ns:film.director .
?x0 a ns:film.producer .
?x0 ns:film.editor.film M2 .
?x0 ns:film.editor.film M3 .
?x0 ns:film.editor.film M4 .
?x0 ns:film.writer.film M2 .
?x0 ns:film.writer.film M3 .
?x0 ns:film.writer.film M4
}