question: Did a company distribute M1 and distribute M2
query: SELECT count(*) WHERE {
  ?x0 a ns:business.employer .
  ?x0 ns:film.film_distributor.films_distributed/ns:film.film_film_distributor_relationship.film M1 .
  ?x0 ns:film.film_distributor.films_distributed/ns:film.film_film_distributor_relationship.film M2
  }