What was directed by a director and producer of M1 and written by a character
SELECT DISTINCT ?x0 WHERE {
?x0 ns:film.film.directed_by ?x1 .
?x0 ns:film.film.written_by ?x2 .
?x1 ns:film.director.film M1 .
?x1 ns:film.producer.film|ns:film.production_company.films M1 .
?x2 a ns:fictional_universe.fictional_character
}