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