question: Were M3 and M4 executive produced by and directed by a screenwriter that executive produced M2 and wrote M1
query: SELECT count(*) WHERE {
  ?x0 a ns:film.writer .
  ?x0 ns:film.producer.films_executive_produced M2 .
  ?x0 ns:film.writer.film M1 .
  M3 ns:film.film.directed_by ?x0 .
  M3 ns:film.film.executive_produced_by ?x0 .
  M4 ns:film.film.directed_by ?x0 .
  M4 ns:film.film.executive_produced_by ?x0
  }