question: What did M0 and M1 write and produce
query: SELECT DISTINCT ?x0 WHERE {
  ?x0 ns:film.film.produced_by|ns:film.film.production_companies M0 .
  ?x0 ns:film.film.produced_by|ns:film.film.production_companies M1 .
  ?x0 ns:film.film.written_by M0 .
  ?x0 ns:film.film.written_by M1
  }