Was a actor 's employer founded by M0 and founded by M1 's prequel 's star and executive producer
SELECT count(*) WHERE {
?x0 ns:business.employer.employees/ns:business.employment_tenure.person ?x1 .
?x0 ns:organization.organization.founders ?x2 .
?x0 ns:organization.organization.founders M0 .
?x1 a ns:film.actor .
?x2 ns:film.actor.film/ns:film.performance.film ?x3 .
?x2 ns:film.producer.films_executive_produced ?x3 .
?x3 ns:film.film.sequel M1
}