question: Was M0 written by M1 and M2 , written by M3 , written by M4 , and written by M5
query: SELECT count(*) WHERE {
  M0 ns:film.film.written_by M1 .
  M0 ns:film.film.written_by M2 .
  M0 ns:film.film.written_by M3 .
  M0 ns:film.film.written_by M4 .
  M0 ns:film.film.written_by M5
  }