question: Were M2 and M4 executive produced by M3 , executive produced by a actor of M0 , and directed by M1 's writer
query: SELECT count(*) WHERE {
  ?x0 ns:film.actor.film/ns:film.performance.character M0 .
  ?x1 ns:film.writer.film M1 .
  M2 ns:film.film.directed_by ?x1 .
  M2 ns:film.film.executive_produced_by ?x0 .
  M2 ns:film.film.executive_produced_by M3 .
  M4 ns:film.film.directed_by ?x1 .
  M4 ns:film.film.executive_produced_by ?x0 .
  M4 ns:film.film.executive_produced_by M3
  }