question: Was M2 directed by M1 's director , directed by M3 and M4 , and executive produced by a film editor
query: SELECT count(*) WHERE {
  ?x0 a ns:film.editor .
  ?x1 ns:film.director.film M1 .
  M2 ns:film.film.directed_by ?x1 .
  M2 ns:film.film.directed_by M3 .
  M2 ns:film.film.directed_by M4 .
  M2 ns:film.film.executive_produced_by ?x0
  }