question: Was M2 written by M3 , written by M4 , M5 , and M6 , and written by a female editor of M1
query: SELECT count(*) WHERE {
  ?x0 ns:film.editor.film M1 .
  ?x0 ns:people.person.gender ns:m.02zsn .
  M2 ns:film.film.written_by ?x0 .
  M2 ns:film.film.written_by M3 .
  M2 ns:film.film.written_by M4 .
  M2 ns:film.film.written_by M5 .
  M2 ns:film.film.written_by M6
  }