Did a producer of a film 's sequel edit and executive produce M0
SELECT count(*) WHERE {
?x0 ns:film.editor.film M0 .
?x0 ns:film.producer.films_executive_produced M0 .
?x0 ns:film.producer.film|ns:film.production_company.films ?x1 .
?x1 ns:film.film.prequel ?x2 .
?x2 a ns:film.film
}