question: Was M6 a film whose art director and executive producer wrote M0 , M1 , M2 , M3 , M4 , and M5
query: SELECT count(*) WHERE {
  ?x0 ns:film.writer.film M0 .
  ?x0 ns:film.writer.film M1 .
  ?x0 ns:film.writer.film M2 .
  ?x0 ns:film.writer.film M3 .
  ?x0 ns:film.writer.film M4 .
  ?x0 ns:film.writer.film M5 .
  M6 a ns:film.film .
  M6 ns:film.film.executive_produced_by ?x0 .
  M6 ns:film.film.film_art_direction_by ?x0
  }