Was M3 's star , editor , and producer employed by M0 , M1 , and M2
SELECT count(*) WHERE {
?x0 ns:film.actor.film/ns:film.performance.film M3 .
?x0 ns:film.editor.film M3 .
?x0 ns:film.producer.film|ns:film.production_company.films M3 .
?x0 ns:people.person.employment_history/ns:business.employment_tenure.company M0 .
?x0 ns:people.person.employment_history/ns:business.employment_tenure.company M1 .
?x0 ns:people.person.employment_history/ns:business.employment_tenure.company M2
}