Was a employer of a director , writer , and executive producer of M0 M1
SELECT count(*) WHERE {
?x0 ns:film.director.film M0 .
?x0 ns:film.producer.films_executive_produced M0 .
?x0 ns:film.writer.film M0 .
M1 ns:business.employer.employees/ns:business.employment_tenure.person ?x0
}