question: What distributor of M6 employed M0 and M1 , employed M2 and M3 , and employed M4 and M5
query: SELECT DISTINCT ?x0 WHERE {
  ?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 .
  ?x0 ns:business.employer.employees/ns:business.employment_tenure.person M4 .
  ?x0 ns:business.employer.employees/ns:business.employment_tenure.person M5 .
  ?x0 ns:film.film_distributor.films_distributed/ns:film.film_film_distributor_relationship.film M6
  }