Was M0 's star and executive producer employed by M1 's producer
SELECT count(*) WHERE {
?x0 ns:film.actor.film/ns:film.performance.film M0 .
?x0 ns:film.producer.films_executive_produced M0 .
?x0 ns:people.person.employment_history/ns:business.employment_tenure.company ?x1 .
?x1 ns:film.producer.film|ns:film.production_company.films M1
}