question: Did M2 and M3 produce a film that was directed by , executive produced by , and written by M1
query: SELECT count(*) WHERE {
  ?x0 a ns:film.film .
  ?x0 ns:film.film.directed_by M1 .
  ?x0 ns:film.film.executive_produced_by M1 .
  ?x0 ns:film.film.written_by M1 .
  M2 ns:film.producer.film|ns:film.production_company.films ?x0 .
  M3 ns:film.producer.film|ns:film.production_company.films ?x0
  }