question: Which film producer was founded by M5 's director , employed M1 , M2 , and M3 , and employed M4
query: SELECT DISTINCT ?x0 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 .
  ?x0 ns:business.employer.employees/ns:business.employment_tenure.person M4 .
  ?x0 ns:organization.organization.founders ?x1 .
  ?x1 ns:film.director.film M5
  }