Was a person that M0 's prequel was produced by , starred , was directed by , and was executive produced by M1
SELECT count(*) WHERE {
?x0 ns:film.film.sequel M0 .
M1 a ns:people.person .
M1 ns:film.actor.film/ns:film.performance.film ?x0 .
M1 ns:film.director.film ?x0 .
M1 ns:film.producer.films_executive_produced ?x0 .
M1 ns:film.producer.film|ns:film.production_company.films ?x0
}