question: Were M1 , M4 , M5 , and M6 produced by M3 , written by M2 , and executive produced by a art director
query: SELECT count(*) WHERE {
  ?x0 a ns:film.film_art_director .
  M1 ns:film.film.executive_produced_by ?x0 .
  M1 ns:film.film.produced_by|ns:film.film.production_companies M3 .
  M1 ns:film.film.written_by M2 .
  M4 ns:film.film.executive_produced_by ?x0 .
  M4 ns:film.film.produced_by|ns:film.film.production_companies M3 .
  M4 ns:film.film.written_by M2 .
  M5 ns:film.film.executive_produced_by ?x0 .
  M5 ns:film.film.produced_by|ns:film.film.production_companies M3 .
  M5 ns:film.film.written_by M2 .
  M6 ns:film.film.executive_produced_by ?x0 .
  M6 ns:film.film.produced_by|ns:film.film.production_companies M3 .
  M6 ns:film.film.written_by M2
  }