question: Did M1 distribute a sequel of M0 and distribute M2
query: SELECT count(*) WHERE {
  ?x0 ns:film.film.prequel M0 .
  M1 ns:film.film_distributor.films_distributed/ns:film.film_film_distributor_relationship.film ?x0 .
  M1 ns:film.film_distributor.films_distributed/ns:film.film_film_distributor_relationship.film M2
  }