What was executive produced by a film director , directed by a film director , and written by M0 and M1
SELECT DISTINCT ?x0 WHERE {
?x0 ns:film.film.directed_by ?x1 .
?x0 ns:film.film.executive_produced_by ?x2 .
?x0 ns:film.film.written_by M0 .
?x0 ns:film.film.written_by M1 .
?x1 a ns:film.director .
?x2 a ns:film.director
}