question: Were M1 and M6 edited by M2 , M3 , M4 , and M5 and directed by a film producer
query: SELECT count(*) WHERE {
  ?x0 a ns:film.producer .
  M1 ns:film.film.directed_by ?x0 .
  M1 ns:film.film.edited_by M2 .
  M1 ns:film.film.edited_by M3 .
  M1 ns:film.film.edited_by M4 .
  M1 ns:film.film.edited_by M5 .
  M6 ns:film.film.directed_by ?x0 .
  M6 ns:film.film.edited_by M2 .
  M6 ns:film.film.edited_by M3 .
  M6 ns:film.film.edited_by M4 .
  M6 ns:film.film.edited_by M5
  }