question: Was a art director whose employer produced M0 and M1 M2
query: SELECT count(*) WHERE {
  ?x0 ns:film.producer.film|ns:film.production_company.films M0 .
  ?x0 ns:film.producer.film|ns:film.production_company.films M1 .
  M2 a ns:film.film_art_director .
  M2 ns:people.person.employment_history/ns:business.employment_tenure.company ?x0
  }