What did M1 's prequel 's executive producer executive produce and M0 write
SELECT DISTINCT ?x0 WHERE {
?x0 ns:film.film.executive_produced_by ?x1 .
?x0 ns:film.film.written_by M0 .
?x1 ns:film.producer.films_executive_produced ?x2 .
?x2 ns:film.film.sequel M1
}