Which sequel of a film was directed by and written by M0 and M1
SELECT DISTINCT ?x0 WHERE {
?x0 ns:film.film.directed_by M0 .
?x0 ns:film.film.directed_by M1 .
?x0 ns:film.film.prequel ?x1 .
?x0 ns:film.film.written_by M0 .
?x0 ns:film.film.written_by M1 .
?x1 a ns:film.film
}