question: Were M1 , M2 , M3 , and M4 written by , directed by , produced by , and executive produced by a film editor
query: SELECT count(*) WHERE {
  ?x0 a ns:film.editor .
  M1 ns:film.film.directed_by ?x0 .
  M1 ns:film.film.executive_produced_by ?x0 .
  M1 ns:film.film.produced_by|ns:film.film.production_companies ?x0 .
  M1 ns:film.film.written_by ?x0 .
  M2 ns:film.film.directed_by ?x0 .
  M2 ns:film.film.executive_produced_by ?x0 .
  M2 ns:film.film.produced_by|ns:film.film.production_companies ?x0 .
  M2 ns:film.film.written_by ?x0 .
  M3 ns:film.film.directed_by ?x0 .
  M3 ns:film.film.executive_produced_by ?x0 .
  M3 ns:film.film.produced_by|ns:film.film.production_companies ?x0 .
  M3 ns:film.film.written_by ?x0 .
  M4 ns:film.film.directed_by ?x0 .
  M4 ns:film.film.executive_produced_by ?x0 .
  M4 ns:film.film.produced_by|ns:film.film.production_companies ?x0 .
  M4 ns:film.film.written_by ?x0
  }