question: Was M2 distributed by a production company and distributed by a person
query: SELECT count(*) WHERE {
  ?x0 a ns:people.person .
  ?x1 a ns:film.production_company .
  M2 ns:film.film.distributors/ns:film.film_film_distributor_relationship.distributor ?x0 .
  M2 ns:film.film.distributors/ns:film.film_film_distributor_relationship.distributor ?x1
  }