question: Were M2 , M4 , M5 , and M6 executive produced by a actor , written by a film editor , and written by M3
query: SELECT count(*) WHERE {
  ?x0 a ns:film.actor .
  ?x1 a ns:film.editor .
  M2 ns:film.film.executive_produced_by ?x0 .
  M2 ns:film.film.written_by ?x1 .
  M2 ns:film.film.written_by M3 .
  M4 ns:film.film.executive_produced_by ?x0 .
  M4 ns:film.film.written_by ?x1 .
  M4 ns:film.film.written_by M3 .
  M5 ns:film.film.executive_produced_by ?x0 .
  M5 ns:film.film.written_by ?x1 .
  M5 ns:film.film.written_by M3 .
  M6 ns:film.film.executive_produced_by ?x0 .
  M6 ns:film.film.written_by ?x1 .
  M6 ns:film.film.written_by M3
  }