Did a film distributor employ M4 's executive producer and employ M1 , M2 , and M3
SELECT count(*) WHERE {
?x0 a ns:film.film_distributor .
?x0 ns:business.employer.employees/ns:business.employment_tenure.person ?x1 .
?x0 ns:business.employer.employees/ns:business.employment_tenure.person M1 .
?x0 ns:business.employer.employees/ns:business.employment_tenure.person M2 .
?x0 ns:business.employer.employees/ns:business.employment_tenure.person M3 .
?x1 ns:film.producer.films_executive_produced M4
}