question: Which producer and distributor of M0 employed M1 's actor
query: SELECT DISTINCT ?x0 WHERE {
  ?x0 ns:business.employer.employees/ns:business.employment_tenure.person ?x1 .
  ?x0 ns:film.film_distributor.films_distributed/ns:film.film_film_distributor_relationship.film M0 .
  ?x0 ns:film.producer.film|ns:film.production_company.films M0 .
  ?x1 ns:film.actor.film/ns:film.performance.character M1
  }