question: Which film was distributed by M1 , M2 , M3 , M4 , M5 , and M6 and was distributed by M7
query: SELECT DISTINCT ?x0 WHERE {
  ?x0 a ns:film.film .
  ?x0 ns:film.film.distributors/ns:film.film_film_distributor_relationship.distributor M1 .
  ?x0 ns:film.film.distributors/ns:film.film_film_distributor_relationship.distributor M2 .
  ?x0 ns:film.film.distributors/ns:film.film_film_distributor_relationship.distributor M3 .
  ?x0 ns:film.film.distributors/ns:film.film_film_distributor_relationship.distributor M4 .
  ?x0 ns:film.film.distributors/ns:film.film_film_distributor_relationship.distributor M5 .
  ?x0 ns:film.film.distributors/ns:film.film_film_distributor_relationship.distributor M6 .
  ?x0 ns:film.film.distributors/ns:film.film_film_distributor_relationship.distributor M7
  }