question: Was M1 executive produced by a screenwriter , written by M2 , and edited by M3 , M4 , M5 , and M6
query: SELECT count(*) WHERE {
  ?x0 a ns:film.writer .
  M1 ns:film.film.edited_by M3 .
  M1 ns:film.film.edited_by M4 .
  M1 ns:film.film.edited_by M5 .
  M1 ns:film.film.edited_by M6 .
  M1 ns:film.film.executive_produced_by ?x0 .
  M1 ns:film.film.written_by M2
  }