question: Which film director was employed by a film distributor and employed by M2 's employer
query: SELECT DISTINCT ?x0 WHERE {
  ?x0 a ns:film.director .
  ?x0 ns:people.person.employment_history/ns:business.employment_tenure.company ?x1 .
  ?x0 ns:people.person.employment_history/ns:business.employment_tenure.company ?x2 .
  ?x1 a ns:film.film_distributor .
  ?x2 ns:business.employer.employees/ns:business.employment_tenure.person M2
  }