Was M4 acquired by a film producer that M1 , M2 , and M3 were employed by
SELECT count(*) WHERE {
?x0 a ns:film.producer .
?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 .
M4 ns:organization.organization.acquired_by/ns:business.acquisition.acquiring_company ?x0
}