question: Which film distributor was a production company that M2 , M3 , M4 , and M5 acquired and M6 and M7 were acquired by
query: SELECT DISTINCT ?x0 WHERE {
  ?x0 a ns:film.film_distributor .
  ?x0 a ns:film.production_company .
  ?x0 ns:organization.organization.acquired_by/ns:business.acquisition.acquiring_company M2 .
  ?x0 ns:organization.organization.acquired_by/ns:business.acquisition.acquiring_company M3 .
  ?x0 ns:organization.organization.acquired_by/ns:business.acquisition.acquiring_company M4 .
  ?x0 ns:organization.organization.acquired_by/ns:business.acquisition.acquiring_company M5 .
  ?x0 ns:organization.organization.companies_acquired/ns:business.acquisition.company_acquired M6 .
  ?x0 ns:organization.organization.companies_acquired/ns:business.acquisition.company_acquired M7
  }