Was a film producer M1 's sequel 's sequel 's executive producer , writer , and art director
SELECT count(*) WHERE {
?x0 a ns:film.producer .
?x0 ns:film.film_art_director.films_art_directed ?x1 .
?x0 ns:film.producer.films_executive_produced ?x1 .
?x0 ns:film.writer.film ?x1 .
?x1 ns:film.film.prequel ?x2 .
?x2 ns:film.film.prequel M1
}