question: What prequel of M0 's prequel was produced and written by a producer of M1
query: SELECT DISTINCT ?x0 WHERE {
  ?x0 ns:film.film.produced_by|ns:film.film.production_companies ?x1 .
  ?x0 ns:film.film.sequel ?x2 .
  ?x0 ns:film.film.written_by ?x1 .
  ?x1 ns:film.producer.film|ns:film.production_company.films M1 .
  ?x2 ns:film.film.sequel M0
  }