question: Was a film written by , directed by , and executive produced by M1 's producer
query: SELECT count(*) WHERE {
  ?x0 a ns:film.film .
  ?x0 ns:film.film.directed_by ?x1 .
  ?x0 ns:film.film.executive_produced_by ?x1 .
  ?x0 ns:film.film.written_by ?x1 .
  ?x1 ns:film.producer.film|ns:film.production_company.films M1
  }