question: Was a country of nationality of M1 's writer , art director , and director a company
query: SELECT count(*) WHERE {
  ?x0 ^ns:people.person.nationality ?x1 .
  ?x0 a ns:business.employer .
  ?x1 ns:film.director.film M1 .
  ?x1 ns:film.film_art_director.films_art_directed M1 .
  ?x1 ns:film.writer.film M1
  }