Did a production company acquire M4 's employer and acquire M1 , M2 , and M3
SELECT count(*) WHERE {
?x0 a ns:film.production_company .
?x0 ns:organization.organization.companies_acquired/ns:business.acquisition.company_acquired ?x1 .
?x0 ns:organization.organization.companies_acquired/ns:business.acquisition.company_acquired M1 .
?x0 ns:organization.organization.companies_acquired/ns:business.acquisition.company_acquired M2 .
?x0 ns:organization.organization.companies_acquired/ns:business.acquisition.company_acquired M3 .
?x1 ns:business.employer.employees/ns:business.employment_tenure.person M4
}