question: Were M2 , M4 , M5 , and M6 directed by M3 , directed by a screenwriter , and executive produced by a person
query: SELECT count(*) WHERE {
  ?x0 a ns:people.person .
  ?x1 a ns:film.writer .
  M2 ns:film.film.directed_by ?x1 .
  M2 ns:film.film.directed_by M3 .
  M2 ns:film.film.executive_produced_by ?x0 .
  M4 ns:film.film.directed_by ?x1 .
  M4 ns:film.film.directed_by M3 .
  M4 ns:film.film.executive_produced_by ?x0 .
  M5 ns:film.film.directed_by ?x1 .
  M5 ns:film.film.directed_by M3 .
  M5 ns:film.film.executive_produced_by ?x0 .
  M6 ns:film.film.directed_by ?x1 .
  M6 ns:film.film.directed_by M3 .
  M6 ns:film.film.executive_produced_by ?x0
  }