Was M3 distributed by a employer of M0 , M1 , and M2
SELECT count(*) WHERE {
?x0 ns:business.employer.employees/ns:business.employment_tenure.person M0 .
?x0 ns:business.employer.employees/ns:business.employment_tenure.person M1 .
?x0 ns:business.employer.employees/ns:business.employment_tenure.person M2 .
M3 ns:film.film.distributors/ns:film.film_film_distributor_relationship.distributor ?x0
}