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