Which prequel of a film did M0 and M1 edit and write
SELECT DISTINCT ?x0 WHERE {
?x0 ns:film.film.edited_by M0 .
?x0 ns:film.film.edited_by M1 .
?x0 ns:film.film.sequel ?x1 .
?x0 ns:film.film.written_by M0 .
?x0 ns:film.film.written_by M1 .
?x1 a ns:film.film
}