Did a employer of M0 employ a film distributor 's employee and employ M1 , M2 , and M3
SELECT count(*) WHERE {
?x0 ns:business.employer.employees/ns:business.employment_tenure.person ?x1 .
?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 .
?x0 ns:business.employer.employees/ns:business.employment_tenure.person M3 .
?x1 ns:people.person.employment_history/ns:business.employment_tenure.company ?x2 .
?x2 a ns:film.film_distributor
}