question: Was M2 employed by a distributor of M0 and M1 and employed by M3 , M4 , M5 , and M6
query: SELECT count(*) WHERE {
  ?x0 ns:film.film_distributor.films_distributed/ns:film.film_film_distributor_relationship.film M0 .
  ?x0 ns:film.film_distributor.films_distributed/ns:film.film_film_distributor_relationship.film M1 .
  M2 ns:people.person.employment_history/ns:business.employment_tenure.company ?x0 .
  M2 ns:people.person.employment_history/ns:business.employment_tenure.company M3 .
  M2 ns:people.person.employment_history/ns:business.employment_tenure.company M4 .
  M2 ns:people.person.employment_history/ns:business.employment_tenure.company M5 .
  M2 ns:people.person.employment_history/ns:business.employment_tenure.company M6
  }