question: Was M1 edited by M2 , edited by M3 , and directed by a film distributor 's employee
query: SELECT count(*) WHERE {
  ?x0 ns:people.person.employment_history/ns:business.employment_tenure.company ?x1 .
  ?x1 a ns:film.film_distributor .
  M1 ns:film.film.directed_by ?x0 .
  M1 ns:film.film.edited_by M2 .
  M1 ns:film.film.edited_by M3
  }