question: Was M1 a film 's distributor 's employee
query: SELECT count(*) WHERE {
  ?x0 ns:film.film_distributor.films_distributed/ns:film.film_film_distributor_relationship.film ?x1 .
  ?x1 a ns:film.film .
  M1 ns:people.person.employment_history/ns:business.employment_tenure.company ?x0
  }