question: What was distributed by M0 , distributed by a film distributor , and distributed by M1
query: SELECT DISTINCT ?x0 WHERE {
  ?x0 ns:film.film.distributors/ns:film.film_film_distributor_relationship.distributor ?x1 .
  ?x0 ns:film.film.distributors/ns:film.film_film_distributor_relationship.distributor M0 .
  ?x0 ns:film.film.distributors/ns:film.film_film_distributor_relationship.distributor M1 .
  ?x1 a ns:film.film_distributor
  }